The oil pan and the lower part of the cylinder block together are called the crankcase; they enclose, or encase, the crankshaft.
油盘和气缸体的下部一起被称为曲轴箱，用来封闭或罩住曲轴。
The crankcase is the lower part of the engine cylinder block .
曲轴箱是发动机气缸体较低的部分。
The crankcase is the lower part of the engine cylinder block .
曲轴箱是发动机气缸体较低的部分。
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