... double-screw washer 双螺旋洗矿机 locking-washer screw 锁紧垫圈螺钉 screw type washer 螺旋式洗砂机 ...
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locking washer screw 锁紧垫圈螺钉
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The swinging rotating joint consists of spherical body, thread joint sleeve, locking screw nut, large copper washer and two spherical rings.
本发明摆动旋转接头由球型接头体，螺纹接头套，锁紧螺帽，大铜垫和两个球面转环构成。
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