At present, screwdriver and screw tap are hardware which is often used in machining factory.
目前，在机械加工工厂里，螺钉旋具和丝锥是较为常用的两种五金工具。
Users in the use of machining centers, are not allowed to change the control system in the factory set parameters.
用户在使用加工中心时，不允许随意改变控制系统内制造厂设定的参数。
The machine has been put into production in Shanghai piston factory and satisfactory machining results are achieved.
该机床已在上海活塞厂投入生产，并取得了良好的加工效果。
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