当压力改变时,阀帽容易上下移动.Bonnet tendency to move up or down as pressure changes.阀帽: 不需要将阀门从管路中拆除,就可以进入维护铰链和阀瓣.Cap: permits access to hinge and disc without removing valve from line.止回阀标签通常安置在阀帽的边缘上.Check valve tags are typically ...
Kuwaiti prisoners have their ears nailed to plank of wood.科威特战俘的耳朵则被钉在厚厚的木板上.We use a plank to cross the ditch.我们用一块木板过了沟。Birdbath, mirror and floodlight belong to bathroom furniture to divide furniture door plank beside...
专门的比萨烤箱比普通家用烤箱效果更好。A real pizza oven gives better results than an ordinary home oven.这些区域也应该设专门的自行车道。Such areas should also be served by dedicated cycle routes.为承担这份高级工作，乔治已在接受专门的培训。George was already being groomed for t...