应加强煤中硒在煤炭洗选、气化等加工和利用过程中迁移转化规律的研究。
The studies on migration and evolution of selenium during preparation and gasification of coal should be strengthened.
煤炭的生物转化是煤炭加工与综合利用中的新课题，正成为国内外研究的热点。
The biotransformation of coal is a new program of coal processing and comprehensive utilization, it is becoming a hot point in domestic and international research.
我国煤炭洗选加工相对落后，煤炭加工设备的利用率低。
Process of coal washing falls behind in our country. The utilization ratio of the processing equipments is low.
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