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Yttrium yog dab tsi, nws daim ntawv thov, nws cov kev siv feem ntau kuaj?
Koj puas paub? Cov txheej txheem ntawm tib neeg nrhiav pom yttrium yog tag nrho ntawm kev sib tw thiab kev sib tw. Nyob rau hauv 1787, Swede Karl Axel Arrhenius nrhiav tau ib tug tuab thiab hnyav dub ore nyob rau hauv lub chaw txua txiag zeb nyob ze nws lub zos ntawm Ytterby lub zos thiab hu ua nws "Ytterbite". Tom qab ntawd, ntau tus kws tshawb fawb inc ...Nyeem ntxiv -
Dab tsi yog Erbium element hlau, daim ntawv thov, cov khoom thiab feem ntau siv txoj kev sim
Raws li peb tshawb nrhiav lub ntiaj teb zoo ntawm cov ntsiab lus, erbium nyiam peb cov xim nrog nws cov khoom tshwj xeeb thiab muaj peev xwm siv tau. Los ntawm lub hiav txwv tob mus rau sab nrauv, los ntawm cov khoom siv hluav taws xob niaj hnub mus rau kev siv hluav taws xob ntsuab, kev siv erbium hauv kev tshawb fawb txuas ntxiv mus ...Nyeem ntxiv -
Barium yog dab tsi, nws daim ntawv thov yog dab tsi, thiab yuav ua li cas ntsuas barium caij?
Nyob rau hauv lub ntiaj teb tej yam yees siv ntawm chemistry, barium yeej ib txwm nyiam cov neeg tshawb fawb nrog nws cov cim ntxim nyiam thiab daim ntawv thov dav. Txawm hais tias qhov no silvery-dawb hlau ntsiab tsis yog dazzling li kub los yog nyiaj, nws plays ib tug indispensable luag hauj lwm nyob rau hauv ntau yam teb. Los ntawm precision instruments ...Nyeem ntxiv -
Dab tsi yog scandium thiab nws cov kev sim siv feem ntau
21 Scandium thiab nws cov kev sim uas nquag siv Zoo siab txais tos rau lub ntiaj teb no ntawm cov ntsiab lus uas muaj kev paub tsis meej thiab ntxim nyiam. Niaj hnub no, peb yuav tshawb txog lub ntsiab tshwj xeeb ua ke - scandium. Txawm hais tias lub ntsiab lus no yuav tsis tshwm sim hauv peb lub neej niaj hnub, nws ua lub luag haujlwm tseem ceeb hauv kev tshawb fawb thiab kev lag luam. Scandium, ...Nyeem ntxiv -
Holmium cov ntsiab lus thiab cov qauv kev sim ntau
Holmium Element thiab Kev Tshawb Fawb Kev Tshawb Fawb Nyob rau hauv lub rooj sib tham ntawm cov khoom siv tshuaj, muaj cov khoom hu ua holmium, uas yog cov hlau tsis tshua muaj. Cov khoom no yog khoom nyob rau hauv chav tsev kub thiab muaj ib tug siab melting point thiab boiling point. Txawm li cas los xij, qhov no tsis yog qhov txaus nyiam tshaj plaws ntawm holmi ...Nyeem ntxiv -
Aluminium beryllium master alloy AlBe5 AlBe3 yog dab tsi thiab nws siv rau dab tsi?
Aluminium-beryllium master alloy yog ib qho khoom siv ntxiv uas yuav tsum tau ua rau kev sib xyaw ntawm magnesium alloy thiab aluminium alloy. Thaum lub sij hawm melting thiab refining txheej txheem ntawm txhuas-magnesium alloy, magnesium ntsiab oxidizes ua ntej txhuas vim nws cov dej num los tsim ib tug loj npaum li cas ntawm xoob magnesium oxide zaj duab xis, ...Nyeem ntxiv -
Kev siv thiab ntau npaum li cas ntawm holmium oxide, qhov loj me, xim, tshuaj formula thiab tus nqi ntawm nano holmium oxide
Dab tsi yog holmium oxide? Holmium oxide, tseem hu ua holmium trioxide, muaj cov tshuaj formula Ho2O3. Nws yog ib qho kev sib xyaw ua ke ntawm lub ntiaj teb tsis tshua muaj holmium thiab oxygen. Nws yog ib qho ntawm cov paub zoo heev paramagnetic tshuaj ua ke nrog dysprosium oxide. Holmium oxide yog ib qho ntawm cov khoom ...Nyeem ntxiv -
900% nce! Tom qab Trump txoj kev xaiv tsa, kuv lub teb chaws tus nqi tsawg hauv ntiaj teb tau nce. Musk puas tau ploj lawm?
Puas yog Tuam Tshoj tus nqi qis hauv ntiaj teb yuav nce siab tsis tau muaj dua tom qab Trump qhov kev xaiv tsa? CITIC Securities cov ntaub ntawv tshawb fawb qhia tau hais tias tus nqi ntawm cov khoom siv hauv ntiaj teb tsis tshua tau nce siab tsis ntev los no, thiab kev lag luam hauv ntiaj teb tsis tshua muaj peev xwm ua rau muaj kev hloov pauv, dhau los ua qhov chaw kub hauv kev lag luam A-kev lag luam tam sim no. ...Nyeem ntxiv -
Kev siv lanthanum carbonate yog dab tsi?
Lanthanum carbonate yog ntau yam sib xyaw uas ua lub luag haujlwm tseem ceeb hauv ntau hom kev lag luam. Lub ntiaj teb no tsis tshua muaj hlau ntsev yog feem ntau paub rau nws siv raws li ib tug catalyst nyob rau hauv cov roj av kev lag luam. Catalysts yog ib qho tseem ceeb hauv cov txheej txheem refining vim tias lawv pab ua kom cov tshuaj refining ...Nyeem ntxiv -
Kev tshawb fawb txog kev txhim kho thiab kev tshuaj ntsuam thev naus laus zis ntawm kev ua haujlwm siab tantalum pentachloride rau tantalum carbide txheej
1. Cov yam ntxwv ntawm tantalum pentachloride: Cov tsos mob: (1) Xim Lub whiteness Performance index ntawm tantalum pentachloride hmoov feem ntau yog siab tshaj 75. Lub zos cov tsos ntawm daj hais yog tshwm sim los ntawm huab cua txias ntawm tantalum pentachloride tom qab rhuab, thiab tsis cuam tshuam rau nws siv. . ...Nyeem ntxiv -
Puas yog barium yog hlau hnyav? Dab tsi yog nws siv?
Barium yog hlau hnyav. Cov hlau hnyav xa mus rau cov hlau uas muaj lub ntiajteb txawj nqus ntau dua 4 txog 5, thiab lub ntiajteb txawj nqus ntawm barium yog li 7 lossis 8, yog li barium yog cov hlau hnyav. Barium compounds yog siv los ua cov xim ntsuab hauv cov foob pob hluav taws, thiab hlau barium tuaj yeem siv los ua tus neeg sawv cev degassing t ...Nyeem ntxiv -
zirconium tetrachloride
Zirconium tetrachloride, molecular mis ZrCl4, yog dawb thiab ci siv lead ua los yog hmoov uas yooj yim deliquescent. Unpurified crude zirconium tetrachloride yog lub teeb daj, thiab purified refined zirconium tetrachloride yog lub teeb liab. Nws yog cov khoom siv raw rau kev lag luam...Nyeem ntxiv