本文采用大子样、小子样抽样理论的数理统计方法，评定电阻应变计灵敏系数的精度等级。
The rank of accuracy of electric resistance strain gage factor is evaluated according to the sampling theory of large samples or small samples.
利用数字电位器ds1867实现了对激光器电源内部电阻的控制，从而改变激光器发射功率等级的目的。
This laser power can control adjustable resistance internal to change the level of transmitting power using the digital resistance DS1867.
“污染等级”是指固体、液体或气体恶化绝缘强度或表面电阻率的程度。
"Pollution degree" describes the degree to which a soild liquid or gas which deteriorates dielectric strength or surf ace resistivity is adhering.
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