英语词汇protective seam怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

网络释义

1
[矿业]?保护层
...库关键字：关键字：煤与瓦斯突出；保护层；防突；瓦斯抽放 [gap=1884]Keywords: Keywords Coal-gas outburst; protective seam; gas control; gas drainage ...

短语

1
protective seam mining
保护层
2
thin protective seam
薄煤保护层
3
lower protective seam
下保护层

双语例句

1
The reasonable position of the upper protective seam workface is chosen by comparing the distressing effects of the twice simulation experiments of mining the upper protective seam.
比较两次开采上解放层模拟试验的卸压程度，确定了上解放层工作面的合理位置；
2
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用，从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。
3
In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method.
为了解决下保护层开采对上覆煤层巷道围岩变形的影响，采用注浆加固巷道围岩是一种可行的方法。

单词	protective seam
释义	protective seam 简明释义解放层网络释义 1 [矿业]?保护层 ...库关键字：关键字：煤与瓦斯突出；保护层；防突；瓦斯抽放 [gap=1884]Keywords: Keywords Coal-gas outburst; protective seam; gas control; gas drainage ... 短语 1 protective seam mining 保护层 2 thin protective seam 薄煤保护层 3 lower protective seam 下保护层双语例句 1 The reasonable position of the upper protective seam workface is chosen by comparing the distressing effects of the twice simulation experiments of mining the upper protective seam. 比较两次开采上解放层模拟试验的卸压程度，确定了上解放层工作面的合理位置； 2 The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine. 通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用，从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。 3 In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method. 为了解决下保护层开采对上覆煤层巷道围岩变形的影响，采用注浆加固巷道围岩是一种可行的方法。
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