2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Dielectric xeem sivqib siab ntawm kev hloov pauv tam sim no (AC) lossis ncaj qha tam sim no (DC) rau qhov thaiv thaiv qhov thaiv thiab ntsuas cov tshuaj tiv thaiv ntawm cov khoom. AC voltage feem ntau yog siv hauv kev sim dielectric. … Qhov theem ntawm qhov hluav taws xob qhov thaiv qhov thaiv tso cai rau tam sim no ntws yog lub zog dielectric ntawm cov khoom.
Lub zog dielectric txhais tau li cas?
Dielectric zog txhais tau tias yog lub zog hluav taws xob ntawm cov khoom thuam. Nyob rau hauv ib tug txaus muaj zog hluav taws xob teb lub insulating zog ntawm ib tug insulator lov cia cia ntws ntawm tus nqi. Dielectric lub zog yog ntsuas raws li qhov siab tshaj plaws voltage yuav tsum tau tsim ib tug dielectric tawg los ntawm ib tug khoom.
Dab tsi yog qhov txawv ntawm qhov ntsuas dielectric thiab ntsuas qhov ntsuas hluav taws xob?
Txawm hais tias, ob qho tib si dielectric xeem thiab kev ntsuas hluav taws xob zoo sib xws hauv qhov uas lawv muaj cov hom phiaj zoo sib xws, qhov ntsuas dielectric feem ntau ntsuas qhov tawg voltage ntawm qhov tsis muaj zog tshwm sim los ntawm cov teebmeem dielectric ntawm txhua yam uas qhov kev ntsuas rwb thaiv tsev ntsuas qhov zoo ntawm rwb thaiv tsev.
HV test yog dab tsi?
Cov kev ntsuas sib txawv thiab ntsuas tau ua thaum lub sijhawm tu thiab / lossis kev ua haujlwm hauv cov tshuab hloov pauv, lub cev muaj zog, lub tshuab hluav taws xob, thiab lwm yam khoom siv hluav taws xob; Kev ntsuas HV (High Voltage) yog feem ntau siv los txiav txim siab qhov ua tau zoo ntawm cov rwb thaiv tsev uas tso cai rau lawv ua haujlwm nrogkev ntseeg siab thiab kev nyab xeeb, thiab …
Hipot test yog dab tsi?
Kev xeem hipot, muab los ntawm lub sij hawm Kev Ntsuas Siab Muaj Peev Xwm, yog ib daim ntawv thov ncaj qha ntawm qhov hluav taws xob siab rau ib chav nyob hauv kev sim. … Kev tawg ntawm cov rwb thaiv tsev yuav ua rau tam sim no ntws hla cov ntsiab lus ntsuas ntawm Hipot tester, qhov dej ntws tam sim no feem ntau hu ua to.
Pom zoo:
Nyob rau hauv angiosperms pollen yog tsim nyob rau hauv anthers ib feem ntawm?
Nyob rau hauv angiosperms, paj ntoos yog tsim los ntawm anthers ntawm the stamens hauv paj. Hauv gymnosperms, nws yog tsim nyob rau hauv microsporophylls ntawm microstrobili (txiv neej paj ntoos cones). Pollen muaj ib los yog ntau tshaj cov noob qoob loo thiab ib lub qe qe.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Nyob rau hauv vernalisation flowering nyob rau hauv cov nroj tsuag yog?
Vernalization (los ntawm Latin vernus, "ntawm lub caij nplooj ntoos hlav") yoginduction ntawm cov nroj tsuag flowering txheej txheem los ntawm raug rau lub caij txias ntawm lub caij ntuj no, los yog los ntawm ib qho khoom sib npaug.
Formula rau lub zog dielectric?
Cov ntaub ntawv: Dielectric lub zog yog xam los ntawm faib cov kev sib cais los ntawm qhov tuab ntawm cov qauv. Cov ntaub ntawv yog qhia hauv Volts/mil. Dab tsi yog chav tsev ntawm dielectric zog? Dielectric lub zog yog ntsuas raws li qhov siab tshaj qhov yuav tsum tau ua los tsim cov dielectric tawg los ntawm cov khoom siv.
Leej twg detering nyob rau hauv tag nrho cov nyob ntsiag to nyob rau sab hnub poob pem hauv ntej?
Detering yog tus neeg ua liaj ua teb los ntawm Txhua Tus Neeg Tsis Txaus Siabntawm Sab Hnub Poob los ntawm Erich Maria Remarque. Nws muaj siab mos siab muag, tshwj xeeb tshaj yog thaum nws los txog rau nees. Nws muaj kev kub ntxhov loj heev thaum nws hnov cov nees quaj thiab txawm sim tua lawv kom kawg lawv txoj kev txom nyem.
