Cov txheej txheem:
- Yuav ua li cas yog reciprocal lattice teev nws cov khoom tseem ceeb?
- Dab tsi yog qhov zoo ntawm kev siv cov lattice reciprocal hla qhov chaw ncaj nraim hauv cov qauv siv lead ua tsom xam?
- Yuav ua li cas cov lattice vectors sawv cev?
- Lub hom phiaj ntawm kev sib koom ua ke hauv kev txiav txim Miller indices yog dab tsi?
Video: Vim li cas kev sib txuas sib txuas yog qhov tseem ceeb?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Cov lattice reciprocal plays lub luag haujlwm tseem ceeb hauv kev tshawb fawb feem ntau ntawm cov qauv ntu, tshwj xeeb hauv kev xav ntawm kev sib txawv. Nyob rau hauv neutron thiab X-ray diffraction, vim yog Laue tej yam kev mob, qhov sib txawv ntawm cov khoom xa tuaj thiab cov duab hluav taws xob sib txawv ntawm cov siv lead uayog cov kab lattice vector.
Yuav ua li cas yog reciprocal lattice teev nws cov khoom tseem ceeb?
Txhua yam khoom
Cov yam ntxwv tseem ceeb ntawm cov lattice sib txuas yog: … Qhov ntev ntawm cov kab lattice vectors yog proportional rau reciprocal ntawm qhov ntev ntawm cov ncaj lattice vectors
Dab tsi yog qhov zoo ntawm kev siv cov lattice reciprocal hla qhov chaw ncaj nraim hauv cov qauv siv lead ua tsom xam?
Qhov kev sib txuas ntawm cov lattice no muaj ntau qhov sib npaug uas cuam tshuam rau qhov sib luag ntawm cov kab ncaj nraimTsuav peb tsis paub cov qauv siv lead ua tsis paub thiab tshuaj xyuas cov ntaub ntawv sib txawv rau kev daws teeb meem cov qauv siv lead ua nws yooj yim nyob hauv qhov chaw uas peb muaj cov ntaub ntawv kev sim ncaj qha.
Yuav ua li cas cov lattice vectors sawv cev?
Nyob rau hauv physics, cov lattice reciprocal sawv cev Fourier hloov ntawm lwm lub lattice (feem ntau yog Bravais lattice) Hauv kev siv ib txwm, qhov no thawj lattice (uas hloov pauv yog sawv cev los ntawm cov lattice reciprocal.) feem ntau yog ib ntus ua haujlwm nyob rau hauv qhov chaw tiag tiag thiab tseem hu ua lub lattice ncaj qha.
Lub hom phiaj ntawm kev sib koom ua ke hauv kev txiav txim Miller indices yog dab tsi?
Cov vector sib raug zoo tsim los ntawm kev siv Miller indices ntawm lub dav hlau raws li nws cov khoom tsim cov vector hauv qhov chaw uas zoo li qub rau lub dav hlau Qhov ntev ntawm qhov sib thooj vector rau lub dav hlau yog qhov kev ncua deb ntawm ob lub dav hlau zoo sib xws. qhov ib txwm nrog txhua vector pw hauv lub dav hlau yuav yog xoom.
Pom zoo:
Vim li cas kev sib txuas yog qhov tseem ceeb?
Cross-link yog ib daim ntawv cog lus uas txuas ib lub xov tooj polymer mus rau lwm tus. … Hla txuas ua rau cov molecular loj ntawm ib lub polymer. Cross-linked polymers yog ib qho tseem ceeb vim tias lawv yog cov neeg kho tshuab muaj zog thiab tiv taus cua sov, hnav thiab tawm tsam los ntawm cov kuab tshuaj .
Qhov kev sim ntawm qhov kev sib tw twg yog qhov tseem ceeb tshaj plaws (pre-eminent)?
- - Txoj kev txuas. Qhov kev ntsuam xyuas tseem ceeb tshaj plaws ntawm lub fixture yog nws txoj kev txuas rau cov cuab yeej tiag. Kev siv cov ntsia hlau, bolts, cement lossis kua nplaum qhia tias txuas mus tas li . 5 qhov kev xeem ntawm kev sib tw yog dab tsi?
Vim li cas qhov tseem ceeb yog qhov tseem ceeb?
Nws yuav tsum muaj lub zog lub cev thiab lub siab lub ntsws. Qhov tseem ceeb yog qhov tseem ceeb uas tso cai rau koj mus txuas ntxiv thiab ua lub neej zoo. Hauv qhov tseem ceeb, qhov tseem ceeb txhais tau hais tias muaj zog, noj qab nyob zoo, thiab muaj txiaj ntsig zoo.
Vim li cas kev sib txuas lus kev lag luam tseem ceeb?
Kev sib txuas lus zoo yog qhov cuab yeej tseem ceeb rau txhua tus tswv lag luam. … Kev sib txuas lus kuj tseem ceeb hauv kev lag luam. Kev sib txuas lus zoo tuaj yeem pab txhawb kom muaj kev sib raug zoo ntawm kev ua haujlwm zoo ntawm koj thiab koj cov neeg ua haujlwm, uas tuaj yeem txhim kho kev coj ncaj ncees thiab kev ua haujlwm zoo .
Vim li cas kev sib nrig sib tseem ceeb hauv kev sib raug zoo?
Kev sib raug zoo ntawm kev sib raug zoo nrog ua kev cog lus rau ib leeg tias kev sib raug zoo yog ib qho tseem ceeb ib yam li txhua tus neeg… Kev cuam tshuam me me tso cai rau koj tseem yog koj thaum paub tseeb koj tus khub txaus siab thiab zoo siab hauv kev sib raug zoo .
