英语词汇“downward movement”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	downward movement
释义	downward movement短语⁴⁴⁰⁸² 基本例句向下运动 Hydraulic feedback hollow sucker rod pump solves the problem of downward movement of the hollow rod on a certain extent. 液力反馈型空心杆抽油泵在一定程度上缓解了抽油杆下行困难的问题。 cnki
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