When heavy tool requires up and down, the balancer can lift it to be good for reducing worker labor strength.
当工具较重，需要频繁上下工作的场合，可借助平衡器的提升力，达到减轻劳动强度的目的。
When heavy tool requires up and down, the balancer can lift it to be good for reducing worker labor strength.
当工具较重，需要频繁上下工作的场合，可借助平衡器的提升力，达到减轻劳动强度的目的。
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