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有时,要车掉螺栓的头或加工带螺纹的零件而不得不夹持螺纹部分时,可以拧上一个或两个事先锯了个开口的螺帽。这样夹持零件,既不损坏
Sometimes, to get rid of the bolt head or the processing of threaded parts and have to hold the threaded part, you can screw one or two previously sawed open nut. Such parts are not damaged