crank case
柯林斯词典
1. N the metal housing that encloses the crankshaft, connecting rods, etc, in an internal-combustion engine, reciprocating pump, etc (内燃机、往复泵等的)曲轴箱
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1. N the metal housing that encloses the crankshaft, connecting rods, etc, in an internal-combustion engine, reciprocating pump, etc (内燃机、往复泵等的)曲轴箱