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Traditional coal depositional model can hardly explain the cause of this extra-thick coal seam.
传统的煤沉积模式难以解释其超厚煤层的成因。
youdao
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The average coal seam here is three feet thick.
这里的煤层平均为3英尺厚。
《柯林斯英汉双解大词典》
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The average UK coal seam is one metre thick.
英国煤层的平均厚度为1米。
youdao
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The average UK coal seam is one metre thick.
英国煤层的平均厚度为1米。
youdao