coal grade

• 煤质

coal grade的用法和样例：

例句

1. The methods of making solid coal sorbent and liquid gelsorbent from lignite are also discussed in this paper.
   列举了由褐煤制取固体煤质吸附剂和液体凝胶吸附剂的方法。
2. The paper introduces the requirement forcoal quality and the application of coal blending of the Texa-co pressure coal-water slurry.
   简介了德士古水煤浆加压气化技术对煤质的要求以及配煤在其中的应用。