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trawl的精選
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用“trawl”造句大全,trawl造句
2018-11-30
hydraulictrawlwinchTocatch(fish)withatrawl.Topcompaniestrawlaglobaltalentpool.Becausethethreepartstrawlboard,trawlandtrawlerareanintegrityintrawlfishing,itisnecessarytoworkoutamechanicalcalculationoft...
用“otter trawl”造句大全,otter trawl造句
2017-03-31
Inordertounderstandtheeffectdegreesproducedbydifferentfactorsonthefishingcapacityofottertrawl,weemployed12factorsinfactoranalysis.Whenfittedwithanottertrawl,inventedin1892,itenabledfishermentohaulinsi...
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