关于trawl的百科

• otter trawl造句怎么写

• Inordertounderstandtheeffectdegreesproducedbydifferentfactorsonthefishingcapacityofottertrawl,weemployed12factorsinfactoranalysis.Whenfittedwithanottertrawl,inventedin1892,itenabledfishermentohaulinsixtimesthecatchofasailingship....
• 2017-03-3129457

• trawl造句怎么写

• hydraulictrawlwinchTocatch(fish)withatrawl.Topcompaniestrawlaglobaltalentpool.Becausethethreepartstrawlboard,trawlandtrawlerareanintegrityintrawlfishing,itisnecessarytoworkoutamechanicalcalculationofthematch.Itsreportstrawlthroughallrecentclimatescie...
• 2018-11-3020074