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Parallelism thiab Flatness yog dab tsi?
Ob qho tib si parallelism thiab flatness yog cov lus ntsuas los ntawm kev ua haujlwm nrog micrometer. Tab sis qhov tseeb parallelism thiab flatness yog dab tsi? Nws zoo li lawv zoo sib xws hauv lub ntsiab lus, tab sis qhov tseeb lawv yeej tsis yog synonymous. Parallelism yog qhov xwm txheej ntawm qhov chaw, kab, lossis axis uas yog equidistant ntawm al ...Nyeem ntxiv -
Kev thov kom muaj kev txwv rau lub raj mis tshuaj iav ntawm COVID-19 tshuaj tiv thaiv
Raws li Wall Street Journal, cov tuam txhab tshuaj thiab tsoomfwv thoob plaws ntiaj teb tam sim no tab tom yuav ntau lub raj mis iav los khaws cov tshuaj tiv thaiv kab mob. Tsuas yog ib lub tuam txhab Johnson & Johnson tau yuav 250 lab lub raj mis tshuaj me me. Nrog rau kev nkag los ntawm lwm lub tuam txhab ...Nyeem ntxiv -
Daim Ntawv Ceeb Toom Txog Hnub So - Lub Caij Nkoj Dragon
Rau peb cov neeg siv khoom thiab cov phooj ywg tshwj xeeb: Saida iav yuav so haujlwm rau Dargon Boat Festival txij hnub tim 25 txog 27 Lub Rau Hli. Yog tias muaj xwm txheej ceev, thov hu rau peb lossis xa email rau peb.Nyeem ntxiv -
Kev Txo Kev Cuam Tshuam
Cov txheej txheem txo qhov kev cuam tshuam, tseem hu ua txheej txheem tiv thaiv kev cuam tshuam, yog ib zaj duab xis kho qhov muag uas tau tso rau ntawm qhov chaw ntawm cov khoom siv kho qhov muag los ntawm kev pab ion-assisted evaporation los txo qhov kev cuam tshuam ntawm qhov chaw thiab ua kom muaj kev sib kis ntawm cov iav kho qhov muag. Qhov no tuaj yeem faib los ntawm thaj chaw ze ultraviolet ...Nyeem ntxiv -
Optical Filter Glass yog dab tsi?
Iav lim dej kho qhov muag yog ib lub iav uas tuaj yeem hloov qhov kev taw qhia ntawm lub teeb kis thiab hloov pauv qhov sib piv ntawm lub teeb ultraviolet, pom, lossis infrared. Iav kho qhov muag tuaj yeem siv los ua cov cuab yeej kho qhov muag hauv lub lens, prism, speculum thiab lwm yam. Qhov sib txawv ntawm iav kho qhov muag thiab ...Nyeem ntxiv -
Kev Siv Tshuab Tiv Thaiv Kab Mob
Hais txog cov thev naus laus zis tiv thaiv kab mob, Saida Glass siv Ion Exchange Mechanism los cog cov sliver thiab cooper rau hauv lub iav. Qhov kev ua haujlwm tiv thaiv kab mob ntawd yuav tsis yooj yim tshem tawm los ntawm cov yam sab nraud thiab nws ua haujlwm tau zoo rau kev siv lub neej ntev dua. Rau cov thev naus laus zis no, nws tsuas yog haum rau g...Nyeem ntxiv -
Yuav ua li cas txiav txim siab qhov cuam tshuam ntawm iav?
Koj puas paub qhov kev tiv thaiv kev cuam tshuam yog dab tsi? Nws hais txog cov khoom siv lub zog kom tiv taus lub zog hnyav lossis kev poob siab siv rau nws. Nws yog ib qho cim qhia tseem ceeb ntawm lub neej ntawm cov khoom siv nyob rau hauv qee qhov chaw ib puag ncig thiab qhov kub thiab txias. Rau qhov kev tiv thaiv kev cuam tshuam ntawm iav vaj huam sib luag...Nyeem ntxiv -
Yuav ua li cas los tsim cov nyhuv dab ntawm iav rau cov cim?
Koj puas paub dab tsi yog dab tsi? Cov cim raug zais thaum LED tua tab sis pom thaum LED qhib. Saib cov duab hauv qab no: Rau cov qauv no, peb luam tawm 2 txheej ntawm kev npog tag nrho dawb ua ntej ces luam tawm txheej xim grey thib 3 kom cov cim tawm. Yog li tsim cov nyhuv dab. Feem ntau cov cim nrog ...Nyeem ntxiv -
Dab tsi yog Ion Exchange Mechanism rau Antibacterial ntawm Iav?
Txawm hais tias muaj cov yeeb yaj kiab tua kab mob lossis tshuaj tsuag, muaj ib txoj hauv kev los ua kom cov tshuaj tua kab mob nyob mus ib txhis nrog iav rau lub neej ntawm lub cuab yeej. Uas peb hu ua Ion Exchange Mechanism, zoo ib yam li kev ua kom muaj zog ntawm cov tshuaj: kom ntub iav rau hauv KNO3, nyob rau hauv qhov kub siab, K + pauv Na + los ntawm iav ...Nyeem ntxiv -
Koj puas paub qhov txawv ntawm cov iav quartz?
Raws li daim ntawv thov ntawm ntau yam spectral band, muaj 3 hom iav quartz hauv tsev. Qib Quartz Iav Daim ntawv thov ntawm ntau yam wavelength (μm) JGS1 Far UV Optical Quartz Iav 0.185-2.5 JGS2 UV Optics Iav 0.220-2.5 JGS3 Infrared Optical Quartz Iav 0.260-3.5 & nb ...Nyeem ntxiv -
Kev Taw Qhia Txog Quartz Iav
iav Quartz yog ib lub iav siv tshuab tshwj xeeb hauv kev lag luam ua los ntawm silicon dioxide thiab yog ib yam khoom siv zoo heev. Nws muaj ntau yam khoom siv lub cev thiab tshuaj zoo heev, xws li: 1. Kev ua haujlwm kub siab Lub qhov kub ntawm cov iav quartz yog li 1730 degrees C, tuaj yeem siv tau...Nyeem ntxiv -
Cov ntaub ntawv iav muaj kev nyab xeeb dua thiab huv dua
Koj puas paub txog ib hom iav tshiab-iav tiv thaiv kab mob? Iav tiv thaiv kab mob, tseem hu ua iav ntsuab, yog ib hom khoom siv tshiab rau kev ua haujlwm ntawm ecological, uas muaj txiaj ntsig zoo rau kev txhim kho ib puag ncig, tswj kev noj qab haus huv ntawm tib neeg, thiab coj kev txhim kho r...Nyeem ntxiv
