目前,建筑工程中多用钢窗,绷钢窗纱扇时,一般是先在压铁条的一面逐个戴上螺丝母,然后用改锥从正面拧紧。这种作法较费工时,活也不好干。针对这种情况,我单位在绷钢窗纱活时,自制 At present, steel windows are often used in construction projects. When a steel wire screen fan is stretched, it is common to first put the screw mother on one side of the iron bar and tighten it with a screwdriver from the front. This kind of practice is more time-consuming and hard work. In response to this situation, my unit made a self