399 rule in "Coalmine security rules" prescribes that difference between any rope load and average load should not over? 10%.

  • 《煤矿安全规程》规定:摩擦提升装置中任一根提升钢丝绳的载荷与平均载荷之差不得超过±10%。

  • 互联网摘选 2025-01-19 23:32:09

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