The influence of argon flow, are length, the inner diameter of hollow cathode on the voltage - ampere characteristics are discussed.
并讨论了氩气流量、弧长和空心阴极内径对电弧伏安特性的影响。
The special gauge blocks for testing digital calipers are length measuring standards, mainly used for testing the indication error of digital calipers, with grade 2 and grade 3 accuracies.
数量卡尺检定专用量块是一种长度计量基准，主要用于数显卡尺示值误差的检定，精度分为2、3级。
The special gauge blocks for testing digital calipers are length measuring standards, mainly used for testing the indication error of digital calipers, with grade 2 and grade 3 accuracies.
数量卡尺检定专用量块是一种长度计量基准，主要用于数显卡尺示值误差的检定，精度分为2、3级。
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