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- 以气代油to Gas on Behalf of Oil
- 以电代煤electricity replacing coal
- 气smell
- 以塑代煤及在水泥回转窑上应用的研究Study on substituting plastic scrap for coal turning-round kiln
- 挨打以气be bullied and beaten; suffer beating and insult
- 煤coal
- 覆以气层[化] gas blanketing
- 华北若干晚古生代煤中稀土元素的赋存特征Modes of Occurrence of Rare Earth Elements in Some Late Paleozoic Coals of North China
- 绝代peerless
- 一口气in one breath
- 乘以multiply ... by ...
- 代言represent
- 以後heresfter tim.
- 烟气flue gases
- 华北地区晚古生代煤的煤质特征与结焦性研究QUALITY AND COKING PROPERTY OF LATE PALEOZOIC COAL IN NORTH CHINA
- 以人为本people oriented; people foremost
- 迭代iteration
- 吹气huff
- 以太网Ethernet
- 呼气expire