词汇	direct sum group
释义	direct sum group 直和群
随便看	Paper-making process tobacco sheet papermaking production paper making production line papermaking profession paper-making project paper making raw material papermaking raw material forest papermaking raw materials papermaking-reconstituted tobacco slice papermaking rubber roller papermakings paper-makings papermaking sewage paper making system papermaking systems Papermaking Technique paper-making technique papermaking technology paper making technology paper-making tobacco sheet paper making waste papermaking waster liquor papermaking wasterwater papermaking wastes papermaking wastewatcr