英语词汇“extremely irregular coal seam”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	extremely irregular coal seam
释义	extremely irregular coal seam 极不稳定煤层; 煤层厚度变化极大,呈透镜状、鸡窝状,一般不连续,很难找出规律,可采块段分布零星的煤层。
随便看	spiral spring (flat spiral spring) spiral spring, leaf spring spiral springs spiral spring suspension spiral spur gear spiral stability spiral stabilization spiral stabilizer spiral stage spiral stair spiral staircase spiral-staircase coil spiral staircase (helical staircase) spiral staircases spiral stairs spiral stairway SPIRAL stairways spiral staple chute spiral steamer spiral steel belt protective sleeve spiral steel pipe spiral stem spiral stirrer spiral storage spiral storage silo

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