Although both the planer and the shaper are adapted to the machining of flat surfaces, they differ widely in construction and in method of operation . 尽管龙门刨床和牛头刨床都适合加工平面,但是在结构上和操作方法上却有很大的差异。
Particular requirements for battery - operated planers 由蓄电池供电的刨刀的特殊要求