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- low grade bituminous coal 低级沥青炭
- What can we do with the bituminous coal? 这些烟煤可以用来做什么？
- A low number; a low grade of oil. 一个小的数; 低级油
- John is down on his teacher because she gave him a low grade. 约翰恨他的导师，因为她给他打了低分。
- General bituminous coal mining; Motor freight. 一般烟煤开采；汽车货运。
- My son mucked up the car engine by using cheap, low grade gasoline. 我的儿子使用便宜的低级汽油,汽车引擎损坏了。
- Of or relating to bituminous coal. 烟煤的烟煤的或与烟煤有关的
- Bituminous coal processing a lot of in-depth study. 对煤沥青加工方面有很多的深入研究。
- Low grades are getting Hellen down. 低分数使海伦闷闷不乐。
- He is a bit let down by the low grade he got. 这次成绩不好, 他有点气馁。
- Low grades are get ting Helen down. 考分很低使海纶闷闷不乐。
- A bituminous coal that burns brightly with much smoke. 烛煤一种能充分燃烧同时产生大量烟的烟煤
- A maximum of 650 KBTU/SQ FT/HR should be used for bituminous coal. 使用生煤时，上限是650 KBTU/SQ FT/HR。
- Within the range of workable deepness from the shallon to the bottom,there existed a verticalzonation of bituminous coal from low rank to high rank. 在由浅到深的可采深度范围内，存在着由低级烟煤到高级烟煤构成的垂直分带。
- My son muck up the car engine by using cheap, low grade gasoline. 我的儿子使用便宜的低级汽油,汽车引擎损坏了。
- The teacher remonstrated with the boy about his low grade. 教师告诫男孩,说他的分数太低了。
- My son muck up the car engine by using cheap,low grade gasoline. 我的儿子使用便宜的低级汽油，这把汽车引擎损坏了。
- A dull dark-gray, brittle, porous type of bituminous coal resembling charcoal. 煤一种似的深灰色、无光泽、易碎的多孔美烟煤。
- Low quality is always a problem; low grade may not be. 质量低常成为一个问题，但等级低则不是。
- Untreated low grade rejection also poses an increased risk for CAV. 为CAV未处理的低等级拒绝也形成增加的风险.
