Semifinished pistons are oversize and must be finished down to size to fit the cylinders.
半精加工的活塞是加大尺寸的，必须进行修整以便与气缸相配合。
As a semifinished product, sorbitol takes a more and more important role in many industries.
山梨醇作为一种中间产品，在许多行业中越来越显示出它重要的应用价值。
Semifinished main bearings require finishing and fitting after installation, so that the crankshaft must be taken out.
半精加工的主轴承安装后需要修整和调配，这样曲轴就必须拆下。
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