最大光杆负荷发生在上行冲程开始时的冲程底部附近。

The peak polished rod load occurs near the bottom of the stroke with the start of the upstroke.

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最大光杆负荷发生在上行冲程开始时的冲程底部附近。

The peak polished rod load occurs near the bottom of the stroke with the start of the upstroke.

youdao