True Union Ball Valve 双由令球阀
True Union Ball Check Valve 双由令球型逆止阀
Bolt Union Ball Valve 理想型球阀
Single Union Ball Valve 单由任球阀
Strong Union Ball Valve 强力型球阀
gas union ball cock 煤气活接头球形旋塞
It was not quite like making the major leagues, more like AAA ball, but it was still a full-fledged professional job in which I paid union dues and made a pretty good income for those days.
打比方说吧，这无法和加入全美职业棒球大联盟相提并论，而更象是加入一个AAA级棒球俱乐部，但它仍是一份正儿八经的成熟职业，我为此缴纳入伙费，并在那些日子里赚得丰厚的收入。
A Confederate cannon ball hit the iron side of the Monitor and bounced away. Union sailors cheered.
南方的炮弹打在蒙尼特号战舰的铁皮上弹开了，北方的士兵欢呼了：维吉尼亚号的大炮对他们不会带来危害！
Thus, by adjusting the tightness of the union nut, the squeeze of the seats against the ball would be maintained.
因此，在调节管接螺母的紧固度时，阀座对球体的压力就一直存在着。
应用推荐