请帮忙翻译一下这个句子！

The amount by which the components pivot is large enough。

littleme wrote:
The amount by which the components pivot is large enough。

这些/所述部件的枢转量足够大。

什么是枢转量？介词by 在这里是什么意思？

littleme wrote:
什么是枢转量？介词by 在这里是什么意思？

部件所枢转的量，部件枢转过的量

by表示幅度、差值、差距等
例如：The house rent has increased by 50% since the same time last year
自去年这个时候以来起房租涨了50%