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.
这种灵活性优化了所需要的泵零部件数量。
This flexibility minimizes the overall number of parts required.
沃尔沃的经理人正设法确定灾难前已运载在船上的部件数量。
Volvo managers are trying to determine how many parts already were loaded on ships.
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