?拼合环

... 拼合隔板 split diaphragm 拼合环 split collar 拼合环座圈 split collar retainer ...

?开口轴环

... 弹性卡环装卸器 开口环装卸器 snapremover 取芯钻夹具 开口环提芯器 corecatcher 开口轴环 split collar ...

?对开环

对开环 split collar 开环 dna ocdna; open circular dna ..

?裂口环

... 裂口焊 cleft welding 裂口环 split collar 裂口科 amidostomatidae; amidostomidae ...