Video: Koj ua li cas thiaj ua rau cov nplais?
2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29
Roj los yog roj: Cov roj molecules yuav muaj kev sib txhuam ntau dua nrog lwm yam khoom nyob ib puag ncig lawv (ib yam khoom hu ua viscosity). Qhov dynamic no ua rau cov roj molecules txav tau yooj yim nrog yuav luag txhua yam uas kov lawv; qhov no yog vim li cas cov roj ntawm ib qho nto teeb lub nto ntau dua nplua.
Tsuas yog li ntawd, dab tsi yog ib yam uas swb tiag?
Cov khoom npliag yog yuag lossis ntub, lossis rau qee qhov laj thawj ua rau koj swb rau lawv. A nplua ntses tsis yooj yim tuav hauv koj txhais tes, thiab a nplua txoj kev yog ib qho yooj yim mus plam rau. Koj yuav tsum tsav maj mam thiab ceev faj thaum txoj kev yog nplua tom qab nws pib pw tsaug zog.
Ib yam li ntawd, vim li cas cov chaw ntub dej ntau dua? ntub dej yog nplua vim lawv ua raws li cov roj nplua nyeem rau nto .. uas txhais tau tias lawv txo qhov kev sib txhuam ua rau ntawm nto Nws yog nplua vim tias, thaum cov kua tau kis thoob plaws a nto nws txo cov kev sib txhuam ntawm cov nto , qhov ntxhib ntawm hauv pem teb tau qis dua.
Tsuas yog li ntawd, dab tsi yog qhov ntog tshaj plaws?
PTFE - Cov Feem ntau Slipper Yam khoom hauv ntiaj teb. PTFE yog lub npe luv rau polytetrafluoroethene, saturated fluorocarbon polymer, uas tau tshawb pom los ntawm Roy Plunkett, 27-xyoo-laus kws tshawb fawb tshuaj ua haujlwm ntawm Du Pont Research Laboratories hauv Deepwater, New Jersey xyoo 1938.
Vim li cas nws yooj yim plam thaum muaj dej nyob hauv pem teb du?
Kev piav qhia: Ntub dej ntub muaj kev sib txhuam tsawg dua li ntawd muaj yog lub sij hawm tsawg dua plam . Qhov no yog vim qhov coefficient ntawm kev sib txhuam Μ thiab qhov tshwm sim ntawm qhov kev txwv tsis pub muaj kev sib txhuam Fs tau txo qis thaum lub roj nplua nyeem tau qhia ntawm ob qhov chaw kinetic lossis zoo li qub.
Pom zoo:
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