Xov xwm
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Photovoltaic iav tuaj yeem tsav nthwv dej ntawm kev lag luam dej qab zib
Cov khoom lag luam tau pib muaj qhov sib txawv ntau dua txij li Lub Xya Hli, thiab kev sib kis tau kuj tau txwv tsis pub nce ntau ntau yam, tab sis dej qab zib tshauv ua raws li maj mam. Muaj ob peb qhov teeb meem nyob rau hauv pem hauv ntej ntawm soda tshauv: 1. Cov chaw tsim khoom cov khoom muag tsawg heev, tab sis cov khoom muag zais ntawm cov ...Nyeem ntxiv -
Dab tsi yog high purity quartz? Dab tsi yog siv?
High-purity quartz hais txog quartz xuab zeb nrog SiO2 cov ntsiab lus ntawm 99.92% txog 99.99%, thiab feem ntau xav tau purity siab dua 99.99%. Nws yog cov khoom siv raw rau kev tsim cov khoom lag luam high-end quartz. Vim tias nws cov khoom muaj lub cev zoo thiab tshuaj lom neeg xws li kub kub ...Nyeem ntxiv -
Dab tsi yog cov txheej txheem ua haujlwm rau cov khoom iav?
Cov khoom iav yog cov ntsiab lus dav dav rau cov khoom siv niaj hnub thiab cov khoom lag luam ua tiav los ntawm iav ua cov khoom siv tseem ceeb. Cov khoom iav tau siv dav hauv kev tsim kho, kev kho mob, tshuaj, tsev neeg, hluav taws xob, instrumentation, nuclear engineering thiab lwm yam. Vim lub siab phem...Nyeem ntxiv -
Kev paub nrov ntawm cov iav tshuaj
Lub ntsiab muaj pes tsawg leeg ntawm iav yog quartz (silica). Quartz muaj cov dej tsis zoo (uas yog, nws tsis tshua muaj dej). Txawm li cas los xij, vim qhov kub siab melting point (kwv yees li 2000 ° C) thiab tus nqi siab ntawm high-purity silica, nws tsis haum rau kev siv ntau lawm; Ntxiv network modifiers tuaj yeem txo qhov ...Nyeem ntxiv -
Tus nqi ntawm cov iav fwj tseem nce ntxiv, thiab qee lub tuam txhab cawv tau cuam tshuam
Txij li thaum pib ntawm lub xyoo no, tus nqi ntawm iav tau yuav luag "txav mus rau txhua txoj kev", thiab ntau qhov kev lag luam uas xav tau siab rau iav tau hu ua "tsis muaj peev xwm". Tsis ntev tas los no, qee lub tuam txhab vaj tse tau hais tias vim qhov nce ntawm cov nqi iav ntau dhau, lawv yuav tsum rov qab ...Nyeem ntxiv -
Lub raj mis iav zoo tshaj plaws nyob hauv lub ntiaj teb no nyob ntawm no: siv hydrogen ua cov oxidant tsuas yog tso dej vapor
Slovenian iav chaw tsim tshuaj paus Steklarna Hrastnik tau tshaj tawm qhov nws hu ua "lub ntiaj teb lub khob iav zoo tshaj plaws." Nws siv hydrogen hauv kev tsim khoom. Hydrogen tuaj yeem tsim tau ntau yam. Ib qho yog decomposition ntawm dej rau hauv oxygen thiab hydrogen los ntawm ele ...Nyeem ntxiv -
Lub raj mis ntawm cov tshuaj ntim khoom nyob rau hauv scanning electron microscope
Qee lub sij hawm dhau los, Tebchaws Asmeskas "Wall Street Journal" tau tshaj tawm tias qhov tshwm sim ntawm cov tshuaj tiv thaiv tab tom ntsib lub raj mis: qhov tsis txaus ntawm cov iav vials rau khaws cia thiab iav tshwj xeeb raws li cov khoom siv raw yuav cuam tshuam kev tsim khoom loj. Yog li no lub khob me me no puas muaj cov ntsiab lus kev cob qhia? Raws li kev ntim khoom ...Nyeem ntxiv -
Kev txuag hluav taws xob thiab txo qis qis hauv kev lag luam iav: lub ntiaj teb thawj lub Hoobkas iav siv 100% hydrogen nyob ntawm no
Ib lub lim tiam tom qab tso tawm ntawm tsoomfwv Askiv lub tswv yim hydrogen, kev sim siv 100% hydrogen los tsim cov iav ntab tau pib hauv thaj tsam Liverpool, uas yog thawj zaug hauv ntiaj teb. Fossil fuels xws li natural gas feem ntau siv nyob rau hauv cov txheej txheem ntau lawm yuav ua tiav ...Nyeem ntxiv -
Lub raj mis thiab corks tseem ceeb rau kev khaws cia cawv, cawv cawv fwj, ntoo qhib corks thiab corkscrews
Kev siv cov iav fwj thiab ntoo qhib corks los khaws cov cawv txiv hmab ua lub luag haujlwm tseem ceeb hauv kev tsim cov cawv txiv hmab thiab tseem coj tau lub sijhawm rau kev khaws cia ntawm cov cawv txiv hmab. Niaj hnub no, qhib lub cork nrog lub hau ntswj corkscrew tau dhau los ua ib qho kev ua yeeb yam rau qhib cawv. Hnub no, peb yuav tham txog thi...Nyeem ntxiv -
Kev lag luam thov rau iav borosilicate ntau tshaj 400,000 tons!
Muaj ntau cov khoom sib cais ntawm cov iav borosilicate siab. Vim tias qhov sib txawv ntawm cov txheej txheem tsim khoom thiab cov txheej txheem nyuaj ntawm cov iav borosilicate siab hauv cov khoom sib txawv, tus naj npawb ntawm cov lag luam hauv kev lag luam txawv, thiab lawv cov kev lag luam concentration txawv. Hig...Nyeem ntxiv -
Kev cuam tshuam hluav taws xob tsawg, lub iav lag luam feem ntau tos-thiab-pom
Tag nrho cov khoom muag: Raws li lub Kaum Hlis 14, tag nrho cov khoom muag ntawm cov tuam txhab iav qauv thoob plaws lub tebchaws yog 40,141,900 lub thawv hnyav, nqis 1.36% lub hli-rau-hli thiab nce 18.96% xyoo-rau-xyoo (nyob rau hauv tib lub caliber, cov khoom muag ntawm cov qauv tuam txhab uas muag poob los ntawm 1.69% lub hli-rau-hli thiab nce los ntawm 8.59% ...Nyeem ntxiv -
Cov iav fwj cov nqi nce ntxiv, qee lub tuam txhab cawv tau cuam tshuam
Txij li thaum pib ntawm lub xyoo no, tus nqi ntawm iav tau "siab dua txhua txoj kev", thiab ntau qhov kev lag luam uas xav tau siab rau iav tau hu ua "tsis muaj kev cia siab". Tsis ntev tas los no, qee lub tuam txhab vaj tse tau hais tias vim qhov nce ntawm iav nqi ntau dhau, lawv yuav tsum tau nyeem ...Nyeem ntxiv