“conveyance falling protection device”的概念、定义、翻译、参考文献-科学参考

单词	conveyance falling protection device
释义	conveyance falling protection device Encyclopedia 工学竖井提升释 conveyance falling protection device断绳防坠装置单绳提升钢丝绳断裂时，防止罐笼坠落的装置。
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