阀门的优点：用金属横膈膜代替人造橡胶衬垫在阀门和阀杆的顶部机件处给予了这种阀门出众的泄漏完整性。
Valve Advantages: The replacement of elastomeric packings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem.
不应该使用金属衬垫。
一种多层滑动轴承，包括具有贴于其上的金属轴承衬垫(14)的刚性金属背衬(12)。
A multilayer sliding bearing includes a rigid metal backing (12) having a metal bearing liner (14) attached thereto.
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