Video: Dab tsi yog qhov yooj yim units ntawm metric system?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub simplicity ntawm lub metric system stems los ntawm qhov tseeb tias tsuas muaj ib chav tsev kev ntsuas (los yog base unit ) rau txhua hom kom muaj nuj nqis ntsuas (ntev, loj, thiab lwm yam). Peb feem ntau base units hauv metric system yog ' meter ', gram, thiab litre.
Raws li txoj cai, plaub lub ntsiab lus ntawm cov metric system yog dab tsi?
Cov thawj coj nrog lub Rooj Sab Laj General ntawm Qhov Ntsuas thiab Ntsuas (CGPM) tau tshaj tawm tias ntawm lub rooj sib tham yuav tsum muaj nyob rau lub lim tiam tom ntej, plaub ntawm base units siv nyob rau hauv metric system yuav rov txhais dua. Cov plaub units Hauv kev tshuaj xyuas yog ampere, kilogram, mole thiab kelvin.
dab tsi yog cov metric units nyob rau hauv kev txiav txim los ntawm tsawg tshaj plaws mus rau loj? Cov hli (mm) yog qhov ntsuas me me ntawm qhov ntev thiab sib npaug 1/1000 ntawm a meter . Cov cm siab ( cm ) yog chav tsev loj tshaj plaws ntawm qhov ntev thiab sib npaug 1/100 ntawm a meter . Cov decimeter (dm) yog qhov loj tshaj plaws ntawm qhov ntev thiab sib npaug 1/10 ntawm a meter.
Ua raws li qhov no, dab tsi yog 7 qhov yooj yim ntawm kev ntsuas hauv qhov ntsuas ntsuas?
SI system, tseem hu ua metric system, yog siv thoob ntiaj teb. Muaj xya chav nyob hauv SI system: lub ntsuas (m), kilogram (kg), qhov thib ob (s), kev (K ), cov ampere (A), mole (mol), thiab candela (cd).
Dab tsi yog qhov yooj yim units ntawm qhov ntev thiab ntim?
Chav tsev SI rau qhov ntev yog meters (m), rau qhov loj yog kilograms (kg), rau ntim yog cubic meter (m^3), rau qhov ceev kilogram per kub meter (kg/m^3), rau lub sij hawm yog vib nas this(s), thiab rau kub yog kelvins(K).
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