walking-beam counterweight
... 游梁式抽油机：beam-pumping unit 游梁平衡块：walking-beam counterweight 游梁：walking beam ...
基于26个网页-相关网页
... 适当调整刹带平衡梁 Adjust the brake band equalizer beam properly 游梁平衡块 beam counterweight 游梁平衡抽油机 balancedpumpingunit ...
基于8个网页-相关网页
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