The hole of which the diameter is 2 mm, the depth/diameter ratio is more than 20 and the taper is less than 0.5% can be machined successfully on the general sink EDM machine tool by using the tube column electrode or the tube flatted electrode.是什么意思_The hole of which the diameter is 2 mm, the depth/diameter ratio is more than 20 and the taper is less than 0.5% can be machined successfully on the general sink EDM machine tool by using the tube column electrode or the tube flatted electrode.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句