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Kev kho dej
Muaj peb txoj kev kho dej: kev kho lub cev, kev kho tshuaj, thiab kev kho dej lom. Txoj kev uas tib neeg tau kho dej tau nyob ib puag ncig tau ntau xyoo. Kev siv lub cev muaj xws li: lim cov ntaub ntawv adsorb lossis thaiv impurities hauv dej, preci ...Nyeem ntxiv -
Qhov txawv ntawm: UVA UVB UVC UVD
Hnub ci yog ib qho hluav taws xob nthwv dej, muab faib ua lub teeb pom kev thiab pom tsis pom. Lub teeb pom kev yog hais txog qhov qhov muag liab qab pom, xws li lub teeb xya xim zaj sawv ntawm liab, txiv kab ntxwv, daj, ntsuab, xiav, indigo, thiab violet nyob rau hauv tshav ntuj; invisible light hais txog w...Nyeem ntxiv -
Qhov txawv ntawm kub cathode UV germicidal teeb thiab txias cathode UV germicidal teeb
Lub hauv paus ntsiab lus ntawm kev ua haujlwm kub cathode ultraviolet germicidal teeb: los ntawm hluav taws xob cua sov cov hmoov hluav taws xob ntawm cov electrode, cov hluav taws xob tso tawm cov mercury atoms hauv lub teeb raj, thiab tom qab ntawd tsim cov mercury vapor. Thaum mercury vapor hloov los ntawm qis-en ...Nyeem ntxiv -
CONVERSION ntawm International Units of Measurement of Length
Chav tsev ntawm qhov ntev yog chav tsev yooj yim siv los ntawm tib neeg los ntsuas qhov ntev ntawm cov khoom hauv qhov chaw. Ntau lub teb chaws muaj qhov sib txawv ntawm qhov ntev. Muaj ntau ntau hom kev hloov pauv qhov ntev hauv lub ntiaj teb, suav nrog cov tsoos suav ntev units, kev sib tw ...Nyeem ntxiv -
Koj puas tau xaiv txoj cai stainless hlau?
Nyob rau hauv lub neej, peb siv stainless hlau nyob txhua qhov chaw, los ntawm cov choj, tsheb ciav hlau, thiab tsev mus rau lub khob haus me me, cwjmem, thiab lwm yam. Muaj ntau ntau cov ntaub ntawv ntawm stainless hlau, thiab koj yuav tsum xaiv cov hlau stainless raws li kev siv tiag tiag. Kab lus no yuav tham txog kev nthuav dav h...Nyeem ntxiv -
Yog tias tus neeg siv khoom tsis teb, koj yuav ua li cas?
Tam sim no peb tau nkag mus rau lub sijhawm tshiab ntawm kev lag luam e-lag luam, thiab kev lag luam online txawv teb chaws tau dhau los ua qhov tseem ceeb. Kev muag khoom tau nthuav dav los ntawm e-lag luam platforms kom tau txais ntau tus neeg siv khoom txawv teb chaws tshiab. Txawm li cas los xij, thaum tus qauv online coj kev yooj yim, nws kuj muaj qhov tsis zoo ...Nyeem ntxiv -
Kev sib piv ntawm 5 feem ntau siv roj fume purifiers
Raws li cov lus hais tias, "Foos yog qhov tseem ceeb tshaj plaws rau tib neeg." Suav ua noj tsis yog tsuas yog technically exquisite, tab sis kuj them nyiaj rau kev sib haum xeeb thiab kev sib koom ua ke ntawm cov xim, aroma, saj, duab thiab kev zoo nkauj ntawm cov zaub mov. Muaj 42 cov txheej txheem ua noj hauv Suav teb ...Nyeem ntxiv -
Sib tham txog UV Wafer Lub Teeb Erasing
Lub wafer yog ua los ntawm ntshiab silicon (Si). Feem ntau muab faib ua 6-nti, 8-nti, thiab 12-nti specifications, wafer yog tsim los ntawm cov wafer no. Silicon wafers npaj los ntawm high-purity semiconductors los ntawm cov txheej txheem xws li siv lead ua rub thiab slicing yog hu ua ...Nyeem ntxiv -
Tom qab "dawb daus hnyav" hauv daim ntawv qhia hnub hli, koj tuaj yeem noj "peb dawb" kom noj qab nyob zoo
Lub Kaum Ob Hlis 7, 2023, 24th hnub ntawm Lub Kaum Hli nyob rau hauv lunar calendar (lunar calendar), yog "hnyav daus" nyob rau hauv cov lus suav hnub so hnub qub. "Havy Snow" yog 21st ntawm 24 lub hnub ci nyob rau hauv lunar daim ntawv qhia hnub thiab lub hnub qub thib peb nyob rau lub caij ntuj no, kos npe rau lub official pib o ...Nyeem ntxiv -
Yav dhau los thiab tam sim no lub neej ntawm ultraviolet germicidal teeb
Txij li thaum WHO tau tshaj tawm tias COVID-19 yog "tus kabmob kis thoob ntiaj teb" thaum Lub Peb Hlis 11, 2020, cov tebchaws thoob plaws ntiaj teb tau pom zoo tias kev tua kab mob yog thawj kab ntawm kev tiv thaiv los tiv thaiv kev kis tus kabmob. Ntau thiab ntau lub koom haum tshawb fawb tshawb fawb tau bec ...Nyeem ntxiv -
Catalog ntawm pathogenic microorganisms kis mus rau tib neeg
Lus Cim: Cov kab lus no tau muab luam tawm los ntawm "Cov Ntawv Teev Npe ntawm Tib Neeg-Cov Kab Mob Sib Kis Kab Mob" tau teeb tsa los ntawm Ministry of Health ntawm Cov Neeg Sawv Cev ntawm Tuam Tshoj, lub teb chaws kev koom ua ke hauv tsoomfwv online pabcuam platform. Cov hauv qab no yog ib qho excerpt los ntawm cov ntawv tseem ceeb. Ntawm ...Nyeem ntxiv -
National Standard for Test Methods of New Chinese Drinking Standards
Ntu 10: Kev ntsuas tshuaj tua kab mob los ntawm cov khoom lag luam tau raug coj los siv Lub teb chaws tus qauv "Txoj Kev Ntsuas Kev Ntsuas rau Cov Dej Haus - Ntu 10: Cov Lus Qhia Txog Cov Tshuaj Tua Kab Mob" yog nyob rau hauv kev txiav txim ntawm 361 (National Health Commission), nrog rau lub tuam tsev muaj peev xwm yog ...Nyeem ntxiv
