由此，部件的数量减少，制造成本减少。
The present invention has less parts and low manufacture cost.
他们希望减少建筑工作所需的部件数量和重量，例如，用空心管代替实心支架。
They hope to reduce both the number of components needed in a construction job and their weight—by replacing solid supports with hollow tubes, for example.
有一种使零部件标准化并减少型号数量的需求。
There is a drive both to standardize components and to reduce the number of models.
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