Thaum twg cov ntsiab lus thuam cov cai teb feem ntau?

Cov txheej txheem:

Thaum twg cov ntsiab lus thuam cov cai teb feem ntau?
Thaum twg cov ntsiab lus thuam cov cai teb feem ntau?
Anonim

Thaum cov ncauj lus thuam cov cai, cov lus teb feem ntau yog: kev tsis ntseeg vim tias cov kev kawm feem ntau yog neeg pluag lossis tsis tau kawm thiab pom tias tsis muaj kev ntseeg siab. Qhov cuam tshuam ntawm kev tshawb pom thiab cov lus pom zoo feem ntau yog los nyiam: kev tshaj tawm xov xwm thoob plaws tab sis ua tsis tiav los tsim txoj cai hloov pauv.

Thaum nws tau sib cav hauv koj cov ntawv uas peb yuav tsum nco ntsoov qhov tseem ceeb ntawm kev tawm tswv yim hauv cov txheej txheem teeb meem kev sib raug zoo nws txhais tau tias?

Cov ntsiab lus hauv cov txheej txheem no (7)

Thaum nws tau sib cav hauv koj cov ntawv uas peb yuav tsum nco ntsoov qhov tseem ceeb ntawm kev tawm tswv yim hauv cov txheej txheem teeb meem, nws txhais tau tias: ntawm txhua theem Hauv cov txheej txheem, kev cuam tshuam rau kev tsim kho tuaj yeem hloov kho txoj kev teeb meem raug tsim.

Thaum cov kws paub txog kev noj qab haus huv kawm txog kev tsim kho cov teeb meem hauv zej zog lawv feem ntau tsom mus rau?

Thaum cov kws tshawb fawb txog kev tsim kho ntawm cov teeb meem kev sib raug zoo, lawv feem ntau tsom mus rau: case kev tshawb fawb ntawm ib qho teeb meem kev tsim kho.

Thaum sib piv cov teeb meem hauv zej zog cov txheej txheem tshawb fawb feem ntau piv cov xwm txheej?

Thaum muab piv cov txheej txheem teeb meem hauv zej zog, cov kws tshawb fawb feem ntau sib piv cov xwm txheej: ntawm txhua theem hauv cov txheej txheem.

Thaum cov xov xwm koom nrog cov txheej txheem teeb tsa lawv raug coj lossis txwv los ntawm?

Thaum cov xov xwm koom nrog cov txheej txheem teeb tsa, lawv raug coj lossis txwv los ntawm: cov peev txheej muaj raulawv, lub hom phiaj loj ntawm cov xwm txheej tshwm sim hauv ntiaj teb, cov neeg ua haujlwm pej xeem, cov kev sib tw xov xwm twg yog npog. hais txog tus nqi ntawm tus kheej lub luag haujlwm.

Pom zoo:

Nthuav cov khoom
Puas talcum hmoov yaj hauv dej?
Nyeem ntxiv

Puas talcum hmoov yaj hauv dej?

Talc yog xyaum insoluble hauv dej, dilute ntxhia acids, thiab dilute daws ntawm alkali halides thiab alkaline hydroxides. Nws yog soluble hauv kub concentrated phosphoric acid. Vim li cas talcum hmoov tsis yaj hauv dej? Tsim Hauv Tsev.

Vim li cas thiaj siv schlieren photography?
Nyeem ntxiv

Vim li cas thiaj siv schlieren photography?

Schlieren kev yees duab yog txheej txheem pom kev uas yog siv los yees duab cov dej ntws ntawm qhov sib txawv. Tsim los ntawm German physicist lub yim hli ntuj Toepler nyob rau hauv 1864 los kawm supersonic motion, nws yog dav siv nyob rau hauv aeronautical engineering los yees duab cov ntws ntawm huab cua nyob ib ncig ntawm cov khoom.

Yuav rov hais dua email li cas?
Nyeem ntxiv

Yuav rov hais dua email li cas?

Koj tuaj yeem sim: "Kuv tab tom ua raws li hauv qab no" lossis "Ua raws li qhov no [thov / nug / haujlwm]" "Kuv rov qab rau hauv qab no" lossis "Circling rov qab rau ntawm no [thov / nug / assignment]