crankcase

名词 crankcase:

1. housing for a crankshaft

1. The oil is leaking out from the crankcase.
   没已从曲轴箱中漏出来。

crank.case

n.（名词）
The metal case enclosing the crankshaft and associated parts in a reciprocating engine.
曲柄轴箱：在往复式发动机内将曲柄轴和相关部件包住的金属箱子