学科分类
/ 5
93 个结果
  • 简介:

  • 标签:
  • 简介:don’t ,the ,he 

  • 标签:
  • 简介:don’t ,and ,the 

  • 标签:
  • 简介:

  • 标签:
  • 简介:

  • 标签:
  • 简介:Iwasalittlefish,livinginabeautifulriver.Theriverwasnotwidebutlong,itswaterwaswarmandclean.Itwasmycomfortablehome.lswamupanddownfreelyeveryday.Ihadalotofgoodfriends.Theyoftencametoseeme.Wegottogether,singing,dancingandtravelling,thegrassbytheriverwasgreen,theskyaboveitwasblue.Howhappywewere!

  • 标签: 初中 学生习作 书面表达 英语
  • 简介:近日,美国生物学家在深海发现了一种奇怪的鱼,它长着透明的脑袋和管状的眼睛,被形象地称为管眼鱼。

  • 标签: 高中 英语 课外阅读 阅读材料
  • 简介:Fishfindershavealreadybeenwidelyavailableinthefishingmarketforanumberofyears.However,thesizesofthesefishfindersaretoobigandtheirpricesareexpensivetosuitfortheresearchofroboticfishormini-submarine.Thegoalofthisresearchistoproposealow-costfishdetectorandclassifierwhichsuitsforunderwaterrobotorsubmarineasaproximitysensor.Withsomepre-conditioninhardwareandalgorithms,theexperimentalresultsshowthattheproposeddesignhasgoodper-formance,withadetectionrateof100%andaclassificationrateof94%.Boththeexistingtypeoffishandthegroupbehaviorcanberevealedbystatisticalinterpretationssuchashoveringpassionandsparseswimmingmode.

  • 标签: FISH detection classincation artificial NEURAL network
  • 简介:Inpresent,thereareincreasinginterestsintheresearchonmechanicalandcontrolsystemofunderwatervehicles.Theseongoingresearcheffortsaremotivatedbymorepervasiveapplicationsofsuchvehiclesincludingseabedoilandgasexplorations,scientificdeepoceansurveys,militarypurposes,ecologicalandwaterenvironmentalstudies,andalsoentertainments.However,theperformanceofunderwatervehicleswithscrewtypepropellersisnotprospectiveintermsofitsefficiencyandmaneuverability.Themainweaknessesofthiskindofpropellersaretheproductionofvorticesandsuddengenerationofthrustforceswhichmakethecontrolofthepositionandmotiondifficult.Ontheotherhand,fishesandotheraquaticanimalsareefficientswimmers,posseshighmaneuverability,areabletofollowtrajectories,canefficientlystabilizethemselvesincurrentsandsurges,createlesswakesthancurrentlyusedunderwatervehicle,andalsohaveanoiselesspropulsion.Thefish’slocomotionmechanismismainlycontrolledbyitscaudalfinandpairedpectoralfins.TheyareclassifiedintoBodyand/orCaudalFin(BCF)andMedianand/orpairedPectoralFins(MPF).Thestudyofhighlyefficientswimmingmechanismsoffishcaninspireabetterunderwatervehiclesthrusterdesignanditsmechanism.Therearefewstudiesonunderwatervehiclesorfishrobotsusingpairedpectoralfinsasthruster.Theworkpresentedinthispaperrepresentsacontributioninthisareacoveringstudy,designandimplementationoflocomotionmechanismsofpairedpectoralfinsinafishrobot.Theperformanceandviabilityofthebiomimeticmethodforunderwatervehiclesarehighlightedthroughin-waterexperimentofaroboticfish.

  • 标签: FISH ROBOT pectoral FINS servos ROWING
  • 简介:Mincethechickenbreast,addeggwhiteandchickenbroth,andcookuntilthemixturethickens.Slicethesoakedfishmaw,andcleanseinlukewarmwater.Slicethecookedhamandthenshred.Putgreensoyabeansinawokandscald.Rinseincoldwatertoretaintheoriginalcolor.Heatsomelardinawok,addspringonionsections,stir-fryuntiltheirfragranceexudes,andremovetheonion.Addchickenbroth,salt,theShaoxingwine,springonionandgingermixture,andfishmawslices.Bringtotheboil,turndowntheheat

  • 标签:
  • 简介:Collectingwoodwasarealpaininthefore-head.Weusedtogototheforesttocollectwoodthirtytimesorsoeachwinterregardlessofthesnoworwind.Wehadtogetupanhourorsoaftermidnightandafterdoingourchoreswewouldheadofftotheforest.Wedidn’treturnuntildusk,"saidMs.Zhongcujia,aged52andaresidentofNiamuorFishVillage,locatedinJiancaCounty,MalhoTibetanAutonomousPrefecture,QinghaiProvince,China.FishVillageisnestledonadenud-edwest-facingmountainslope.

  • 标签:
  • 简介:Gutthefish,andremovegillsandfins.Rinse.Makediagonalcutsonthesurface,andplaceinboilingwaterwithchoppedscallions.ginger,cookingwineandsalt.Simmeruntilthemeatturnswhite.Removefromwatertoaplate.Heatoilinawokandaddshreddedscallions,ginger,garlic,wintermushroomsandpepper.Stirfryuntilalmostcooked.Addwater,sugar,vinegar,cookingwine,andsoysauce.Thickenwithcornstarch.Thenaddafewdropsofhotoil,andmix.Pourthemixtureoverthefish,sprinklewithcorianderandserve.

  • 标签: 烹饪技术 制作材料 美食学 “乌溜鱼”