大学《检测技术》复习重点.pdf

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1、学习好资料欢迎下载检测技术课程复习重点一、掌握以下名词1、系统误差：在重复性条件下，对同一被测量进行无限多次测量所得结果的平均值与被测量的真值之差，称为系统误差。2、应变效应：当应变片变形时，其电阻值发生相应改变的现象。3、横波：指点的振动方向与波的传播方向垂直，称为横波。4、霍尔元件不等位电动势：在额定激励电流下，当外加磁场为零时，霍尔输出端之间的开路电压称为不等为电动势。5、固有噪声：在电路中电子元件本身产生的，具有随机性、宽频带的噪声称为固有噪声。6、总线：计算机的芯片之间、内部插片之间以及系统与系统之间都需要用导线连接起来，这些互连信号线的集合称为总线。7、绝对误差：测量值与真值之间的

2、差值。8、分辨力：是指传感器能检出被测信号的最小变化量，是有量纲的数。9、电涡流效应金属导体置于变化的磁场中时，导体表面就会有感应电流产生，电流的流线在金属体内自行闭合，这种由电磁感应原理产生的漩涡状感应电流称为电涡流。10、反射波：当超声波以一定的入射角从一种介质传播到另一种介质的分界面上时，一部分能量反射回原介质，称为反射波。11、直接接触测温法：采用各种型号及规格的热电偶，用粘接剂或者焊接的方法，将热电偶直接与被测金属表面直接接触，然后把热电偶接到显示仪表上的测温方法。12、屏蔽：利用金属材料制成容器，将需要防护的电路包围在其中，可以防止电场或磁场耦合干扰的方法称为屏蔽。13、电磁兼容性

3、：电子设备在规定的电磁干扰环境中能按照原设计要求而正常工作的能力，而且也不向处于同一环境中的其他设备释放超过允许范围的电磁学习好资料欢迎下载干扰。14、磁阻效应：半导体材料的电阻率随磁场强度的增强而变大的现象。15、声波的指向性：超声波声源发出的超声波以一定的角度逐渐向外扩散，在声束横截面的中心轴线上，超声波最强，随着扩散角度的增大而减少的特性。掌握以下知识点1、磁场引起磁敏电阻发生变化的原因。一是材料的电阻率随磁场强度增强而变大，二是磁场使电流在器件内部的几何分布发生变化，从而使物体的等效电阻增大。2、接近开关与机械开关相比有以下优点。（1）、非接触检测，不影响被测物体的运行工况；（2）、不

4、产涩会给你机械磨损和疲劳损伤，工作寿命长；（3）、响应时间快；（4）、采用全密封结构，防潮、防尘性能较好，工作可靠性强；（5）、无触点、无火花、无噪声；（6）、输出信号大，易于和计算机接口；（7）、体积小安装方便；3、反射型和透射型超声波传感器的应用。（1）超声波测量流量（2）超声波测量厚度（2）超声波测量液体位置和物位4、热电偶测温的主要优点。（1）测量时不需要外加电源，可以直接驱动动圈式仪表；（2）结构简单适用方便；（3）测温范围广；（4）测温准确度高。5、热量在温度波动以及不均匀温度场对检测装置的干扰主要体现。（1）各种电子元件均有一定温度系数，温度升高，电路参数会随之改变，引起误差；（

5、2）由于电子元件多由不同金属构成，当它们相互连接组成电路时，如果各点温度不均匀就不可避免的产生电动势，它叠加在有用信号上引起测量误差；文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8

6、S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J1

7、0 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X

8、9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W

9、3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:

10、CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N

11、10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3学习好资料欢迎下载（3）元器件长期

12、在高温下工作时，将降低使用寿命、降低耐压等级甚至烧毁；6、光耦的优点。答：（1）输入输出贿赂绝缘电阻高，耐压高；（2）因为光的传输是单向的，输出信号不会反馈和影响输入端；（3）输入、输出回路在电气上是完全隔离的，能很好的解决不同电位、不同逻辑电路之间的隔离和传输的矛盾。7、射击弹着点示意图，请你分别说出图a、b、c 各包含什么误差。答：A 系统误差、B 随机误差、C 偶然误差8、电涡流传感器的调幅式测量转换电路的缺点。答：（1）、调幅式测量转换电路输出电压与位移不是线性关系，必须用千分尺逐点标定，并用计算机线性化之后才能用数码管显示出位移量；（2）、电压放大器的放大倍数的漂移会影响测量精度，必

13、须采取各种温度补偿措施。9、电容传感器测量电路中脉冲宽度调制电路的工作原理。是利用某种方法对半导体开关器间的导通和关断进行控制，在电路的输出端得到一系列按照一定规律变化的、幅值相等而宽度不相等的脉冲。电容容量的不同将引起充放电时间的快慢变化，导致矩形波发生电路输出脉冲的占空比随差动电容传感器的电容量变化而变化，通过低通滤波器可以得到相应被测量变化的直流信号。10、磁粉探伤的基本原理。使用大电流对导磁金属材料制成的工件进行磁化，使之达到饱和的程度。若材文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10

14、ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X

15、9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文

16、档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS

17、2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10

18、L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 H

19、B9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5

20、L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3学习好资料欢迎下载料内部非常均匀，没有缺陷，则在其内部将产生均匀分布的磁力线。如果工件便面或者近表面区域存在裂纹、气孔等缺陷，这些缺陷会阻碍磁力线的通过，产生漏磁现象，使缺陷两侧的表面产生一对N、S的局部磁场，这时若在被检工件表面撒上磁铁粉悬液，磁粉就会被漏磁场所吸附，产生磁粉集聚，因而把缺陷的形象清楚的显示出来

21、。11、热电偶的冷端温度补偿方法。（1）冷端恒温法；（2）计算修正法；（3）仪表机械零点调整法；（4）电桥补偿法；（5）利用半导体集成温度传感器测量冷端温度法；12、消除或较少电磁干扰的措施有哪些？答：（1）消除或抑制干扰源；（2）切断干扰途径；（3）消弱接受回路对干扰的敏感性；13、电容传感器的优点。（1）可获得较大的相对变化量；（2）能在恶劣的环境条件下工作；（3）电容器工作所需的激励源功率小；（4）动态响应快。14、在潮湿或酸、碱、盐等各种腐蚀气体环境下工作的检测装置如何采取保护措施。（1）将变压器等易漏电或击穿的元器件用绝缘漆或环氧树脂浸泡，将整个印制电路板用防水硅胶密封；（2）对设备

22、定期通电加热去潮，或者保持机箱内微热状态；（3）将易受潮的电子线路安装在不透气的机箱内，箱盖用橡胶圈密封；文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X

23、9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文

24、档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS

25、2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10

26、L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 H

27、B9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5

28、L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3学习好资料欢迎下载15、防止磁场耦合干扰的办法。（1）是信号源

29、引线原理强电流烦扰源，从而较少互感量；（2）采用低频磁屏蔽；（3）采用双绞扭导线，从而使引入信号处理电路两端的干扰电压大小相等、相位相同，使差模干扰变为共模干扰。文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A

30、6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7

31、X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9

32、I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4

33、J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO

34、1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3文档编码:CS2A6N10L7X1 HB9I8S5L4J10 ZO1X9X9B5W3