阀座环–硬面阀座环焊入阀体内.Seat Ring – hard faced seat rings are welded to body.整体后座–硬面,使用寿命最长.Integral Backseat – hard faced for maximum backseat life.带有H的阀内件型号具有钴合金硬面阀座环表面.Trim numbers with H have cobalt alloy hard faced seat ring...
Foolish expenditures bankrupted him.胡乱花费使他破产.Tax expenditures are the revenues forgone due to preferential tax treatment.税收支出是由于税收优惠待遇而放弃的收入.Please total all the expenditures.请计算一下全部支出是多少。Nonproductive expenditures keep ...