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Check hydraulic cylinder operation and seal, replace seal if necessary.
检查液压油缸的动作与密封，需要时更换密封件。
youdao
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The invention realizes tension and loose of chain through hydraulic cylinder;
本发明通过液压缸实现链 条的收紧和松开；
youdao
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The invention realizes tension and loose of chain through hydraulic cylinder;
本发明通过液压缸实现链 条的收紧和松开；
youdao