对水下液压冲击铲的机械本体、密封结构、铲头形状、工具腔长度等进行了设计、分析。
Analyse and design mechanism, seal structure, shape of shovel head and length of tool chamber.
检查液压油缸的动作与密封，需要时更换密封件。
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。
Check hydraulic cylinder operation and seal, replace seal if necessary.
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