... counterbalance词组短语 beam counterbalance抽油机游梁平衡重量 pointer counterbalance指针平衡锤 ...
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The steel beam that connects the rotary counterbalance with the walking beam on a beam pumping unit.
在游梁式抽油机上使旋转的平衡块与游梁相连的钢杆。
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If a beam supports a load above, the beam itself must have sufficient strength to counterbalance that weight.
一旦梁上面有负载，那么这根梁必需有足够的强度来支撑这个负载。
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