2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Invented hauv 1866 los ntawm Jacques Legrand, qhov "perf gauge" (qee zaum hu ua odontometer) yog cov pobzeb hlau lossis yas uas muaj qhov ntsuas ntawm 7 thiab 7½. rau 16 thiab 16½ raug cim (cov cim qee zaum tshwm sim ntawm cov npoo ntawm cov nplais).
Dab tsi yog perforation gauge siv rau?
A perforation gauge yog ib lub cuab yeej ntsuas tus naj npawb ntawm qhov perforation ntawm ntug ntawm lub thwj cim, uas yog, tus naj npawb ntawm qhov ntev ntawm ob centimeter.
Dab tsi yog qhov zoo tshaj plaws stamp perforation gauge?
"Qhov Kev Ntsuas Qhov Zoo Tshaj Plaws hauv Ntiaj Teb Tsuas Yog Zoo Tshaj!"
Tus Scott / Linns Multi-Gauge yog qhov ntsuas qhov perforation, tshem tawm qhov ntsuas, xoom- center kav thiab millimeter kav nyob rau hauv ib tug siv-phooj ywg ntsuas. Nws kuj yog qhov zoo rau kev ntsuas qhov ntau thiab cov nyiaj hli ntawm lub hau!
Yuav ua li cas ntsuas qhov ntsuas qhov ntsuas?
Qhov tseeb tshaj plaws los ntsuas qhov perforations yog muab tshuaj txhuam dub rau ntawm daim npav dawb raws nraim ob centimeters dav thiab tso lub thwj rau ntawm nwskom qhov nruab nrab ntawm tus hniav coincides nrog ntug ntawm cov xim dub; ces koj yuav tsum suav tus naj npawb ntawm perforations mus rau lwm ntug ntawm band.
Thaum twg cov ntawv nyiaj perforated tau tsim?
Thawj cov nyiaj muas noj hauv Teb Chaws Asmeskas yuav tsum tau perforated rau ntawm lub tshuab no yog cov nyiaj 3 xees uas siv rau hauv 1857 (daim duab 4). Cov ntawv sau ntxov tshaj plaws ntawm kev siv cov ntawv pov thawj zoo li no yog Lub Ob HlisPeb 28, 1857.
Pom zoo:
Leej twg invented hlau smelting?
Txoj kev loj hlob ntawm cov hlau smelting yog ib txwm ua los ntawm cov neeg Hittites ntawm Anatoliantawm lub hnub nyoog Bronze lig. Nws tau ntseeg tias lawv tswj hwm txoj haujlwm ntawm cov hlau ua haujlwm, thiab lawv lub tebchaws tau ua raws li qhov txiaj ntsig ntawd.
Leej twg invented the dumbwaiter?
Tus neeg kho tshuab dumbwaiter tau tsim los ntawm George W. Cannon, tus neeg tsim khoom hauv New York City. Cannon thawj zaug ua ntaub ntawv rau patent ntawm lub nres nres (US Patent no. 260776) uas yuav siv tau rau ib tug dumbwaiter rau lub ib hlis ntuj 6, 1883.
Leej twg invented renormalization pab pawg?
Renormalization captures xwm tus nyiam los txheeb nws tus kheej rau hauv lub ntiaj teb tseem ceeb ywj pheej. Ob tus kws kho mob, Murray Gell-Mann thiab Francis Low Francis Low Francis Eugene Low (Lub Kaum Hli 27, 1921 - Lub Ob Hlis 16, 2007) yog ib tus kws tshawb fawb Asmeskas txoj kev xav.
Leej twg invented lub pratfall?
Psychologist Elliot Aronson Elliot Aronson Elliot Aronson (yug Lub Ib Hlis 9, 1932) yog ib tus kws paub txog kev puas siab puas ntsws Asmeskas uas tau ua cov kev sim ntawm txoj kev xav ntawm kev paub tsis meej, thiab tsim lub chav kawm Jigsaw, ib txoj kev qhia kev sib koom tes uas pab txhawb kev kawm thaum txo cov kev sib cav sib ceg thiab kev ntxub ntxaug.
Thaum twg tide gauge invented?
Nws tsis yog txog thaum 1851 hauv San Francisco uas US Coast thiab Geodetic Survey thawj zaug xa tawm qhov ntsuas tus kheej sau tus kheej. Thaum twg lub tide gauge invented? The Saxton Gauge Joseph Saxton tau tsim ib qho kev sau npe ntawm tus kheej hauv 1851.
