Microcomputer controlled electro-contact touch needle is used to find center of the hole in X orientation and measure diameter in Y orientation.
电接触探针在微机控制下，在X方向找中心，在Y方向进行孔径测量。
2
ESD(Electro Static Discharge):the transfer of electrostatic charge between bodies at different electrostatic potentials by direct contact or induced by electrostatic field.
静电释放：是指通过直接接触或静电场感应的方式，在不同电势差的情况下导致静电荷转移的现象。
3
The influence of the ratio of Alg, W component and porosity upon the resistivity of Ag - W electro - contact material were examined by the computer simulation approach .