The main bearing shells often have a thin （） of lead or indium to provide a layer giving protection against corrosion.
举一反三
- Stock carried to provide a level of protection against stockouts due to of demand during lead time.
- A main bearing consists of two shells which are secured by means of studs and （）.
- The main bearing shells are made of steel with a lining of bearing metal which may be white metal， copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）
- The external circumference of a pair of main bearing shells is slightly （） that of the bore of the housing which receives them Whats the meaning of “that” in the sentence above？
- 海水能引起腐蚀。 A: Seawater can cause corrosion. B: seawater can ensue corrosion. C: Seawater can give rise to corrosion. D: Corrosion can be incurred by seawater.