2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Perchloroethylene (PCE, los yog tetrachloroethylene) tau siv txij li thaum the 1930s.
Thawj lub tshuab ziab khaub ncaws qhib thaum twg?
Cov qhab nia rau kev ua lag luam ua ntej lub tshuab ziab khaub ncaws mus rau lub tuam txhab ntawm Jolly-Belin, uas tau qhib hauv 1825 hauv Paris, raws li Phau Ntawv Qhia Txog Cov Ntsiab Lus.
Thaum twg chlorinated cov kuab tshuaj ua ntej siv?
Lawv tau tsim thawj zaug hauv tebchaws Yelemes hauv xyoo 1800, thiab siv dav hauv Tebchaws Meskas (Asmeskas) pib tom qab Tsov Rog Ntiaj Teb Zaum II. Nyob rau lub sijhawm xyoo 1940-1980, Tebchaws Asmeskas tau tsim txog li 2 billions ntawm cov kuab tshuaj chlorinated txhua xyoo.
kev ziab qhuav tuaj qhov twg?
Kev lig kev cai, Jean Baptiste Jolly ntawm Fabkis feem ntau yog hu ua leej txiv ntawm kev tu qhuav niaj hnub. Zaj dab neeg hais tias xyoo 1825, ib tug poj niam uas tsis saib xyuas tau khob lub teeb thiab nchuav turpentine rau ntawm daim ntaub qias neeg. Jolly pom tias ib zaug cov turpentine qhuav, cov stains uas tau ua rau daim ntaub ploj mus.
Puas Perchlorethylene puas tseem siv los ntxuav qhuav?
Perchloroethylene ("perc") tau ntev tau lees paub tias yog siv tau cov tshuaj ntxuav kom qhuavthiab niaj hnub no nws yog nyob deb ntawm cov tshuaj hnyav tshaj plaws hauv khw muag khoom qhuav. Txawm li cas los xij, raws li cov organic hnyav hnyav, perc tuaj yeem ua rau muaj kev phom sij loj rau kev noj qab haus huv yog tias tsis raug tswj kom raug.
Pom zoo:
Thaum twg cov khoom tawg tau siv thawj zaug?
Thawj thawj qhov hluav taws xob hluav taws xob tau tsim nyob rau hauv 1879 los ntawm Thomas Edison, thaum nws tau los nrog lub tswv yim ntawm kev tiv thaiv kab hluav taws xob siv rau teeb pom kev zoo los ntawm cov teeb meem tshwm sim ntawm overloads tam sim no thiab luv circuits.
Thaum twg cov lus tau siv thawj zaug?
Ntxiv mus, nws tuaj yeem nyuaj rau txheeb xyuas raws nraim thaum qee cov txheej txheem sau ntawv tau tsim thiab qhov twg los ua ntej. Qhov kev pom zoo dav dav yog tias Sumerian yog thawj hom lus, tsim nyob rau yav qab teb Mesopotamia ncig 3400 lossis 3500 BCE.
Thaum twg snipers tau siv thawj zaug?
1701–1800. Cov ntaub ntawv thaum ntxov ntawm sniping lossis marksmanship tau siv thaum lub sij hawm American Revolutionary War. Piv txwv li, nyob rau hauv 1777 ntawm kev sib ntaus sib tua ntawm Saratoga cov Colonists nkaum hauv cov ntoo thiab siv cov phom sij thaum ntxov los tua cov tub ceev xwm Askiv.
Thaum twg tau siv hluav taws xob thawj zaug?
Ua ntej nws tau tsim nyob rau hauv the 1890s, lo lus taws tau siv los piav txog ib tus pas uas tuaj yeem teeb thiab siv los ua lub teeb. Thaum lub teeb nyem tau siv dav thoob plaws ntiaj teb, lawv tau pib paub hauv tebchaws Askiv li hluav taws xob.
Thaum twg koj lub nkoj tau siv thawj zaug?
Early U-boats (1850–1914) Thawj submarine ua nyob rau hauv lub teb chaws Yelemees, peb-tus txiv neej Brandtaucher, poob rau hauv qab ntawm Kiel chaw nres nkoj ntawm 1 Lub Ob Hlis 1851 thaum lub sij hawm ib tug xeem dhia. Tus neeg tsim khoom thiab tus kws tshaj lij Wilhelm Bauer tau tsim lub nkoj no hauv xyoo 1850, thiab Schweffel &
