Lathes (usually called engine lathes) today have a power-driven, variable-speed horizontal spindle to which the workholding device is attached.是什么意思_Lathes (usually called engine lathes) today have a power-driven, variable-speed horizontal spindle to which the workholding device is attached.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句