These years, novel screw is used increasingly in the field of plastic, and most of extruders are equipped with all kinds of screws in some developed countries.
近年来，新型螺杆在塑料行业的应用越来越广泛，国外的大部分挤出机都已经装备了各种新型螺杆。
Both the graduated circle and vernier are equipped with fine adjusting screws and locking device so as to achieve fine adjustment.
刻度和游标都装有微动调整和锁紧装置，进行精细调节。
Both the graduated circle and vernier are equipped with fine adjusting screws and locking device so as to achieve fine adjustment.
刻度和游标都装有微动调整和锁紧装置，进行精细调节。
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