... 浅眼开采法:short hole method 浅矿:shallow mine 浅截深采煤:narrow web mining ...
基于64个网页-相关网页
old shallow mine workings 废弃的浅埋矿井
Shallow is mine 我的爱情浅
shallow-laid mine 浅水布放水雷
mine shallow seismograph 矿井浅层地震仪
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