低灰煤是开发煤炭应用新领域的前提。
Low ash coal is a precondition to develop a new area of coal utilization.
区内的汝箕沟地区是我国重要的太西煤的产地，盛产世界上少有的低灰低硫优质无烟煤。
Rujigou area is an important area of Taixi coal producing area of our country.
区内的汝箕沟地区是我国重要的太西煤的产地，盛产世界上少有的低灰低硫优质无烟煤。
Rujigou area is an important area of Taixi coal producing area of our country.
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