In the control system for skin pass mill elongation,the measuring devices in common use are pulse generator and laser velocimeter,of which the control accuracy of the laser velocimeter is higher.是什么意思_In the control system for skin pass mill elongation,the measuring devices in common use are pulse generator and laser velocimeter,of which the control accuracy of the laser velocimeter is higher.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句