free-ash coal 无灰煤
free-ash coke 无灰焦
free ash coke 无灰焦
dry and ash free 可燃基 ; 干燥无灰基
ash free fuel 无灰分燃料 ; [能源] 无灰燃料
ash free 无灰分的 ; [科技] 无灰的
dry ash free 干燥无灰基 ; 干货 ; 干燥无灰 ; 干灰免费
ash-free coke 无灰焦碳
moisture ash free coal 无水无灰煤
With the coal rank reduced, the light component content of the ash-free ash obtained would be increased.
随着煤阶的降低，得到的无灰煤中轻组分含量增加；
Geothermal assets put in the spotlight by the volcano ash that has grounded much of Europe's air traffic, Iceland on Saturday urged visitors stranded there to take a free dip in its thermal pools.
冰岛火山喷发形成的大量火山灰致使欧洲大量航班停飞，而该国的地热资源也因此成为人们关注的焦点。冰岛有关部门于上周六表示，被困在冰岛境内的游客可前往该国的温泉池免费泡温泉。
The moisture, ash, total humic acid and free humic acid of the brown coal were analyzed.
对褐煤水分、灰分、总腐植酸、游离腐植酸、进行了分析和评价。
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