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民间资源保护队
20世纪30年代大萧条期间为解决失业问题和抑制环境退化而成立的机构,是罗斯福新政的重要举措之一。
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coal-accumulating province
coal accumulation
coal-accumulation belt
coal-accumulation center
coal accumulation controlled by basin
coal accumulation in highstand systems tract
coal accumulation in lake transgressive systems tract
coal accumulation in transgressive systems tract
coal accumulation model for barrierless coast
coal accumulation system
coal alkylation
coal and gas co-production
coal and gas outburst
coal and rock support machinery
coal as fuel
coal ball
coal balls
coal-based alcohols and esters
coal-based chemical
coal-based ester synthesis
coal-based ethanol synthesis
coal-based fuel
coal based methanol
coal-based methanol
coal-based methanol; ether mixed fuel
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