rock-bolt crane beam是什么意思，rock-bolt crane beam的翻译，rock-bolt crane beam音标、读音、用法和例句

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rock-bolt crane beam是什么意思，rock-bolt crane beam的翻译，rock-bolt crane beam音标、读音、用法和例句_食材鋪反向词典

rock-bolt crane beam

基本解释

专业释义

水利工程