-
發表於:2018-12-01
ultravioletraysWhatareinfraredandultravioletrays?Childrenshouldwearglassesthatfilteroutultravioletrays.Thesun'sheatandultravioletrayswillkillanythinginside.Asuncreamprov...
-
發表於:2017-06-07
sharks;rays;dogfishes;skates.CosmicraysandX-raysproduceenergeticelectronsbyionization.brightraysonlunarsurfacebottom-dwellingtropicalrays:skates.largerayslackingvenomouss...
-
發表於:2024-01-31
1、Theguncanfireinvisiblerays.2、Theinvisibleraysslicedanddicedmyentrailsinsearchofmetal....
-
發表於:2024-01-04
1、Biggreycat,thebrilliantraysofopportunismalwaysflashintheeyes,bendingthewaistwaitsforthechancetocarryoutaside.2、But,mymostbeautifulintheheartplace,iscastlightonsuchtha...
-
發表於:2022-04-19
ButterflyfromsouthofFrancewithacrepuscularrays.Outlinedbyraysofsunlightknownascrepuscularrays,theyareactuallyshadowscastbycloudsnearthedistantwesternhorizon,thesettingsun...
-
發表於:2017-01-17
Strictlyspeaking,itisimpossibletoabsorballgammarays.FoodisirradiatedbybriefexposuretoX-rays,gammaraysoranelectronbeam.Positronsandelectronsannihilatedeachother,emittingga...
-
發表於:2024-02-05
1、chargecompositionofprimarycosmicrays2、"Theinnerone,mostlyprotonsthoughttobeproducedbyprimarycosmicraysstrikingtheatmosphere,iscentredabout3,700mi(6,000km)aboveEarth...
-
發表於:2023-12-28
1、Themostdamagingradiationaregammaraysandx-rays;energeticalpharays(streamsofheliumnuclei)andbetarays(electrons)canalsodamagecells.2、??and??havebeensuggestedasthebestsou...
-
發表於:2018-06-03
escapepathlengthofcosmicrayschargecompositionofprimarycosmicraysOrdinarycosmicraysarepunythings.NASAplanstolaunchasatellitetostudycosmicrays.Thisradiationpossiblyisasourc...