2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
txhuam hniav raws li peb paub niaj hnub no tsis tau tsim mus txog 1938. Txawm li cas los xij, cov ntaub ntawv thaum ntxov ntawm cov txhuam hniav tau tshwm sim txij li 3000 BC. Ancient civilizations siv ib tug "chew stick," uas yog ib tug nyias twig nrog ib tug frayed kawg. Cov 'chew sticks' no tau rub tawm ntawm cov hniav.
Lawv siv dab tsi ua ntej txhuam hniav?
tshuaj txhuam hniav hauv kab lis kev cai qubZoo li txhuam hniav, cov neeg Iyiv siv cov tshuaj txhuam hniav los ntxuav lawv cov hniav nyob ib puag ncig 5000 BC, txawm tias ua ntej cov txhuam hniav tau tsim! Cov neeg Greek thaum ub thiab Loos kuj paub tias tau siv tshuaj txhuam hniav, thiab cov neeg hauv Suav teb thiab Is Nrias teb siv tshuaj txhuam hniav nyob ib puag ncig 500 BC. ib yam.
Yuav siv tshuaj txhuam hniav li cas?
Tsis zoo li cov cuab yeej ntxuav hniav ua ntej, tus txhuam hniav thawj zaug tso siab rau ntawm cov tsiaj: a pob txha kov thiab npua bristles. … Tam sim ntawd paub txog qhov tseem ceeb ntawm cov bristles ruaj khov, lawv tau pom cov npua hauv cov huab cua txias xws li Siberia thiab sab qaum teb Tuam Tshoj.
Thaum twg tib neeg pib txhuam hniav nrog txhuam hniav?
hnub niaj hnub txhuam hniav raws li tus cwj pwm tsis tu ncua tau tshwm sim hauv Tebchaws Europe los ntawm kawg ntawm xyoo pua 17th. Thawj tus txhuam hniav tsim tawm tau tsim hauv tebchaws Askiv xyoo 1780 los ntawm William Addis.
txhuam hniav zoo li cas hauv 1700s?
Nyob hauv Tebchaws Europe, thawj zaug paub cov txhuam hniav tsim tawm thaum xyoo 1700s, txhuam hniav tau yooj yimtsim; ib daim me me ntawm cov pob txha lossis ntoo raug laum nrog qhov me me thiab cov bristles tau muab khi rau ntawm txhuam taub hau. … Synthetic fibers xws li nylon yog thawj zaug siv, thiab celluloid li kov es tsis txhob tsiaj cov pob txha.
Pom zoo:
Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?
Sodium lauryl sulfate (SLS) yog surfactant feem ntau siv. YPuas yog tshuaj txhuam hniav puas yog surfactant? Surfactants. Ntau, txawm tias tsis yog tag nrho, tshuaj txhuam hniav muaj sodium lauryl sulfate (SLS) lossis lwm yam surfactants (detergents).
Puas siv cov tshuaj txhuam hniav puas zoo rau koj cov hniav?
Flossing pab txhawb kev tu hniav zoo vim nws nqa thiab tshem cov quav hniav thiab zaub mov hauv nruab nrab ntawm koj cov hniav. Kev txhuam hniav kuj tshem tawm cov quav hniav thiab cov khoom noj khoom haus, tab sis cov txhuam hniav ntawm cov txhuam hniav tsis tuaj yeem ncav cuag tob hauv nruab nrab ntawm cov hniav kom tshem tawm tag nrho.
Puas txhuam txhuam hniav puas tas sijhawm?
Thaum pov: Cov ntsia hlau ntev npaum li cas? Zoo, nyob ntawm. Qhib lub raj mis, tom qab li ob xyoos. Tsis qhib, lawv tuaj yeem nyob mus ib txhis, hais tias Annette Soboleski, tus kws tshaj lij rau ntsia thawv polish tsim OPI Products Inc. Koj tuaj yeem qhia tau li cas yog cov ntsia thawv polish tau ploj mus?
Thaum twg marcasite thawj zaug siv rau hauv cov hniav nyiaj hniav kub?
Marcasite cov hniav nyiaj hniav kub tau tsim txij li lub sijhawm ntawm cov neeg Greek thaum ub. Nws yog tshwj xeeb tshaj yog nyob rau hauv lub xyoo pua kaum yim xyoo, lub sijhawm Victorian thiab nrog Art Nouveau cov hniav nyiaj hniav kub tsim.
Puas txhuam txhuam txhuam koj lub tsheb?
Thaum koj nqa koj lub tsheb mus rau lub tsheb ntxuav, tsis txhob siv lub tshuab ua npuas ncauj. Nws yuav twv yuav raug khawb ntawm koj lub tsho ntshiab, tshwj xeeb nrog Siberian Ice. Puas txhuam txhuam tsis zoo rau lub tsheb? Tshwj xeeb tshaj yog vim txhua tus siv lawv, lawv poob rau hauv av, thiab muaj av thiab grit uas yuav khawb koj lub tsheb.
