Cov txheej txheem:

Cov qauv ntawm cov ntaub ntawv yog dab tsi?
Cov qauv ntawm cov ntaub ntawv yog dab tsi?

Video: Cov qauv ntawm cov ntaub ntawv yog dab tsi?

Video: Cov qauv ntawm cov ntaub ntawv yog dab tsi?
Video: Hmoob qauv ntaub qauv ntawv (Part 1 of 7) 2024, Kaum ib hlis
Anonim

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: