The microstructure uniformity, hardness, electric erosion and stability of breakdown voltage for NS W-Cu electrical contact material excel that of conventional PM W-Cu alloy, but the electric conductivity is equivalent.是什么意思_The microstructure uniformity, hardness, electric erosion and stability of breakdown voltage for NS W-Cu electrical contact material excel that of conventional PM W-Cu alloy, but the electric conductivity is equivalent.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句