1)double ender,双端窄匙2)double narrow seal face,双端窄面密封3)front face,窄端面4)tapering at the ends,末端渐窄5)duplex lock,双重钥匙锁6)bicipital bone curette,双头骨刮匙
用法和例句
the structure design of the dual mechanical seal with double narrow seal face is designed,and this type of mechemical seal was successfully use in practice.