英语词汇pitch coal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

单词	pitch coal
释义	pitch coal 简明释义沥青褐煤网络释义 1 ?倾斜煤层 ... pitch-shortening factor 短距系数 pitching coal 倾斜煤层 pitching-in ①吃刀，切入量②切口③空刀距离 ... 短语 1 steeply pitching coal 急倾斜煤层 2 lightly pitching coal 缓倾斜煤层 3 steeply pitching thick coal seam 急倾斜厚煤层双语例句 1 The specific calculated data of mining technology in the steeply pitching medium thick coal seam and it's application effect in real construction are introduced. 介绍了急倾斜中厚煤层回采工艺的具体计算数据，以及在实际施工中的应用效果；同时介绍了采后沿空留巷的施工方法。
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