英语词汇“pre-support”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	pre-support
释义	pre-support 基本例句超前支护 The advance support of intake and return aircourse needs a lot of plate girders in the comprehensive mechanized coal mining face.综采工作面的进回风巷超前支护要用很多板梁。
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