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for subject
Chemistry
containing
圆头
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in specified order only
Chinese
English
圆圆封头
elliptical head
圆圆封头
ellipsoidal head
圆头
螺钉
round head carriage bolt
圆头
铆钉
round rivet
圆头
铆钉
rounded rivet
圆头
铆钉
pan-head rivet
圆环接头
ring joint
非圆形封头
noncircular head
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