Xov xwm
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Tuam Tshoj tau tshawb pom cov peev txheej helium zoo dua
Tsis ntev los no, Haixi Prefecture Natural Resources Bureau ntawm Qinghai Province, ua ke nrog Xi'an Geological Survey Center ntawm Tuam Tshoj Geological Survey, Lub Chaw Tshawb Fawb Roj thiab Roj Av thiab Lub Tsev Kawm Ntawv Geomechanics ntawm Suav Academy of Geological Sciences, tau tuav lub rooj sib tham ...Nyeem ntxiv -
Kev tshuaj xyuas kev lag luam thiab kev cia siab ntawm chloromethane
Nrog rau kev txhim kho tas li ntawm silicone, methyl cellulose thiab fluororubber, kev ua lag luam ntawm chloromethane txuas ntxiv txhim kho Cov Khoom Txheej Txheem Cej Luam Methyl Chloride, tseem hu ua chloromethane, yog cov organic compound nrog cov tshuaj CH3Cl. Nws yog cov roj tsis muaj xim ntawm chav tsev kub thiab siab ...Nyeem ntxiv -
Cov pa roj laser excimer
Excimer laser yog ib hom ultraviolet laser, uas feem ntau siv rau ntau qhov chaw xws li kev tsim khoom siv chip, phais qhov muag thiab kev ua laser. Chengdu Taiyu Gas tuaj yeem tswj qhov sib piv kom raug kom ua tau raws li cov qauv kev txhawb nqa laser, thiab peb lub tuam txhab cov khoom tau siv rau...Nyeem ntxiv -
Qhib qhov txuj ci tseem ceeb ntawm hydrogen thiab helium hauv kev tshawb fawb
Yog tsis muaj cov thev naus laus zis ntawm cov kua hydrogen thiab cov kua helium, qee qhov chaw tshawb fawb loj yuav zoo li ib pawg hlau seem ... Cov kua hydrogen thiab cov kua helium tseem ceeb npaum li cas? Cov kws tshawb fawb Suav tau kov yeej cov hydrogen thiab helium uas tsis yooj yim ua kua li cas? Txawm tias yog cov zoo tshaj plaws ...Nyeem ntxiv -
Cov roj hluav taws xob tshwj xeeb uas siv ntau tshaj plaws - nitrogen trifluoride
Cov pa roj hluav taws xob tshwj xeeb uas muaj fluorine feem ntau suav nrog sulfur hexafluoride (SF6), tungsten hexafluoride (WF6), carbon tetrafluoride (CF4), trifluoromethane (CHF3), nitrogen trifluoride (NF3), hexafluoroethane (C2F6) thiab octafluoropropane (C3F8). Nrog rau kev txhim kho ntawm nanotechnology thiab...Nyeem ntxiv -
Cov yam ntxwv thiab kev siv ntawm ethylene
Cov mis tshuaj yog C2H4. Nws yog cov khoom siv tshuaj lom neeg tseem ceeb rau cov xov paj hluavtaws, roj hmab hluavtaws, cov yas hluavtaws (polyethylene thiab polyvinyl chloride), thiab ethanol hluavtaws (cawv). Nws kuj tseem siv los ua vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde, thiab expl...Nyeem ntxiv -
Krypton muaj txiaj ntsig zoo heev
Krypton yog ib qho roj inert uas tsis muaj xim, tsis muaj ntxhiab, tsis muaj saj, hnyav li ob npaug ntawm huab cua. Nws tsis ua haujlwm thiab tsis tuaj yeem hlawv lossis txhawb kev sib xyaw. Cov ntsiab lus ntawm krypton hauv huab cua yog me me heev, tsuas yog 1.14 ml ntawm krypton hauv txhua 1m3 ntawm huab cua. Kev siv krypton hauv kev lag luam Krypton muaj qhov tseem ceeb ...Nyeem ntxiv -
Xenon purity siab: nyuaj rau tsim thiab tsis tuaj yeem hloov pauv tau
Xenon uas muaj qhov huv siab, yog ib qho roj inert uas muaj qhov huv siab tshaj 99.999%, ua lub luag haujlwm tseem ceeb hauv kev kho mob, teeb pom kev zoo, kev khaws cia hluav taws xob thiab lwm yam teb nrog nws tsis muaj xim thiab tsis muaj ntxhiab, qhov ceev ceev, qhov kub qis thiab lwm yam khoom. Tam sim no, kev lag luam xenon uas muaj qhov huv siab thoob ntiaj teb ...Nyeem ntxiv -
Silane yog dab tsi?
Silane yog ib qho tshuaj sib xyaw ua ke ntawm silicon thiab hydrogen, thiab yog ib lo lus dav dav rau ntau yam tshuaj sib xyaw. Silane feem ntau suav nrog monosilane (SiH4), disilane (Si2H6) thiab qee cov tshuaj silicon hydrogen siab dua, nrog rau cov mis dav dav SinH2n + 2. Txawm li cas los xij, hauv kev tsim khoom tiag tiag, peb feem ntau xa mus rau monos...Nyeem ntxiv -
Cov roj txheem: lub hauv paus ntawm kev tshawb fawb thiab kev lag luam
Hauv lub ntiaj teb dav dav ntawm kev tshawb fawb thiab kev tsim khoom lag luam, cov roj txheem zoo li tus phab ej ntsiag to tom qab qhov xwm txheej, ua lub luag haujlwm tseem ceeb. Nws tsis yog tsuas yog muaj ntau yam kev siv xwb, tab sis kuj qhia txog kev cia siab hauv kev lag luam. Cov roj txheem yog cov roj sib xyaw nrog lub ntsiab lus paub meej ...Nyeem ntxiv -
Yav tas los siv los ua kom cov npas tawg, helium tam sim no tau dhau los ua ib qho ntawm cov khoom siv tsawg tshaj plaws hauv ntiaj teb. Helium siv tau dab tsi?
Helium yog ib qho ntawm ob peb lub roj uas sib dua li huab cua. Qhov tseem ceeb tshaj, nws ruaj khov heev, tsis muaj xim, tsis muaj ntxhiab thiab tsis muaj teeb meem, yog li nws yog ib qho kev xaiv zoo heev los siv nws los tshuab cov npas uas nws tus kheej ntab. Tam sim no helium feem ntau hu ua "roj av tsis tshua muaj" lossis "roj kub". Helium yog ...Nyeem ntxiv -
Yav Tom Ntej ntawm Kev Rov Qab Los ntawm Helium: Kev Tsim Kho Tshiab thiab Kev Cov Teeb Meem
Helium yog ib qho khoom siv tseem ceeb rau ntau yam lag luam thiab tab tom ntsib teeb meem tsis txaus vim muaj tsawg thiab muaj neeg xav tau ntau. Qhov Tseem Ceeb ntawm Kev Rov Qab Los ntawm Helium Helium yog qhov tseem ceeb rau cov ntawv thov xws li kev thaij duab kho mob thiab kev tshawb fawb txog kev tshawb fawb mus rau kev tsim khoom thiab kev tshawb nrhiav qhov chaw....Nyeem ntxiv
