Cov txheej txheem:
Video: Vim li cas kev ntsuas thiab ntsuas qhov tseem ceeb hauv kev tshawb fawb txog kev lag luam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntsuas feem ntau siv nyob rau hauv kev tshawb fawb txog kev lag luam vim tias lawv pab hloov cov ntaub ntawv zoo (xav, kev xav, kev xav) rau hauv cov ntaub ntawv ntau, cov lej uas tuaj yeem txheeb xyuas tau. Koj tsim ib nplai los ntawm kev muab ib yam khoom (yuav ua tau piav qhia) rau tus lej.
Tom qab ntawd, ib tus tuaj yeem nug, vim li cas kev ntsuas thiab ntsuas qhov tseem ceeb hauv kev tshawb fawb?
Ntsuas yog tseem ceeb hauv kev tshawb fawb . Hauv lwm lo lus, cov kws tshawb fawb ua tau ntsuas qee yam xwm txheej hauv qee yam. Qhov ntau yog suav nrog nplai . Yog li, cov kws tshawb fawb tuaj yeem txhais cov ntaub ntawv nrog ntau qhov kev txiav txim siab uas ua rau muaj qhov tseeb thiab cov txiaj ntsig tau zoo dua.
Tsis tas li ntawd, qhov ntsuas yog dab tsi thiab vim li cas nws tseem ceeb? Tsis muaj peev xwm ntsuas , nws yuav nyuaj rau cov kws tshawb fawb los ua cov kev sim lossis tsim cov kev xav. Tsis yog xwb ntsuas qhov tseem ceeb hauv kev tshawb fawb thiab kev lag luam tshuaj, nws tseem yog qhov tseem ceeb hauv kev ua liaj ua teb, engineering, kev tsim kho, kev tsim khoom, kev lag luam, thiab ntau yam haujlwm thiab kev ua haujlwm.
Yog li ntawd, dab tsi yog scaling nyob rau hauv kev tshawb fawb kev lag luam?
“ Scaling ”hauv Kev tshawb fawb . Txhais: Scaling yog tus txheej txheem ntawm kev ntsuas thiab muab cov khoom rau cov lej raws li cov cai teev tseg. Hauv lwm lo lus, tus txheej txheem ntawm kev nrhiav cov khoom ntsuas ntawm qhov txuas ntxiv, ib ntu txuas ntxiv ntawm cov lej uas cov khoom raug muab hu ua kev ntsuas.
Dab tsi yog cov txheej txheem scaling tseem ceeb hauv kev tshawb fawb?
Scaling Techniques hauv Kev Tshawb Fawb Kev Lag Luam
- Nominal Nplai. Nominal scale yog qhov yooj yim siv tab sis muab qhov ntsuas qis tshaj plaws.
- Ncua Sij Hawm. Lub sijhawm ntsuas feem ntau yog siv rau hauv kev tshawb fawb kev lag luam.
- Ordinal Nplai.
- Sib piv cov nplai.
- Qhov ntsuas ntsuas.
Pom zoo:
Vim li cas kev lag luam tshuaj suav hais tias yog kev lag luam yooj yim?
Kev lag luam tshuaj siv cov khoom siv raw los tsim cov khoom lag luam qhia cov kua qaub, hauv paus, alkali thiab ntsev. Cov khoom siv feem ntau yog siv rau hauv kev tsim khoom ntawm lwm cov khoom lag luam xws li iav, chiv, roj hmab, tawv, ntawv thiab textiles. Yog li, peb tuaj yeem hais tias kev lag luam tshuaj lom neeg yog kev lag luam yooj yim
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Vim li cas thiaj muaj kev lag luam thiab kev ua lag luam?
Ua thiab lagging strands coli, DNA polymerase uas tswj feem ntau ntawm cov synthesis yog DNA polymerase III. Cov strand no yog ua tsis tu ncua, vim hais tias DNA polymerase yog txav mus rau tib qho kev taw qhia raws li cov diav rawg replication. Qhov no tsis tu ncua synthesized strand yog hu ua tus thawj strand