Cov txheej txheem:
Video: Cov qauv ntawm cov ntaub ntawv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Khoom siv yog cov khoom lossis cov khoom uas cov khoom tsim los ntawm.
Peb siv ntau yam khoom sib txawv txhua hnub; tej zaum yuav muaj xws li:
- hlau.
- yas.
- ntoo.
- iav.
- ceramics.
- hluavtaws fibers.
- composites (ua los ntawm ob los yog ntau tshaj cov ntaub ntawv ua ke)
Hauv qhov no, 4 hom khoom siv yog dab tsi?
Khoom siv feem ntau muab faib ua plaub Cov pab pawg tseem ceeb: hlau, polymers, ceramics, thiab composites. Cia peb tham txog lawv ib leeg. Cov hlau yog cov ntaub ntawv xws li hlau, npib tsib xee, thiab tooj liab.
Tsis tas li ntawd, cov qauv ntawm cov khoom siv kab lis kev cai yog dab tsi? Khoom kab lis kev cai muaj tej yam uas tsim los ntawm tib neeg. Piv txwv suav nrog tsheb, tsev, khaub ncaws, thiab cov cuab yeej siv. Cov khoom tsis yog khoom kab lis kev cai hais txog cov tswv yim theabstract thiab txoj kev xav uas ua rau a kab lis kev cai . Piv txwv ntawm nonmaterial kab lis kev cai suav nrog kev cai tsheb, cov lus, thiab kev hnav khaub ncaws.
Yog li ntawd, 5 hom khoom siv yog dab tsi?
20 Hom khoom siv
- Yas. Ib pawg dav ntawm cov organic tebchaw uas yog moldedin rau ntau yam khoom, cov khoom, cov khoom thiab ntim.
- Hlau. Cov hlau thiab alloys xws li hlau, txhuas, titanium, tooj liab, tin, npib tsib xee, nyiaj, kub, hlau, tooj dag thiab tooj dag.
- Ntoo.
- Ntawv.
- Ntuj Textiles.
- Synthetic Textiles.
- Tawv.
- Fibers.
Cov piv txwv ntawm cov khoom siv ntuj yog dab tsi?
Piv txwv ntawm Natural Materials
- Pob zeb (granite, flint, soapstone, thiab lwm yam)
- Ntoo thiab cog fibers.
- Tsiaj qhov chaw (antlers, fur, pob txha, thiab lwm yam)
- Hlau (natural tshwm sim tooj liab, kub, nyiaj, thiab lwm yam)
- Composites (av nplaum, porcelain, av, thiab lwm yam)
Pom zoo:
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Thaum muab piv cov qauv sau rau ib tus neeg raug liam cov ntaub ntawv lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub tshaj kaum ob lub hlis?
Thaum piv cov qauv sau rau tus neeg raug liam? cov ntaub ntawv, lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub ntau tshaj rau rau kaum ob lub hlis. Tus lej txaus ntawm tus qauv yog qhov tseem ceeb rau kev txiav txim siab qhov tshwm sim ntawm kev sib piv
Dab tsi yog cov cuab yeej lossis cov ntaub ntawv uas tus Kws Tshawb Fawb xav tau los txheeb xyuas cov ntaub ntawv nug?
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule