2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Gravely Commercial Zero Turn Mowers 2020. Gravely, Ib Lub Tuam Txhab Asmeskas Muaj los ntawm the Ariens Tsev Neeg, tau nyob ib puag ncig txij li xyoo 1916. Cov Neeg Asmeskas Cov Neeg Ua Haujlwm hauv Brillion, Wisconsin tsim Cov Khoom Siv Ua Lag Luam Zoo uas Keep Lawns Kho tau thoob plaws Asmeskas thiab thoob ntiaj teb.
Leej twg tsim Gravely zero tig mowers?
Gravely tau yuav los ntawm AriensCo nyob hauv Brillion, Wisconsin, xyoo 1982. Niaj hnub no lub npe Gravely ua haujlwm raws li kev lag luam nyom faib ntawm AriensCo thiab nws cov khoom tseem raug muag tshwj xeeb los ntawm nws tus neeg muag khoom network. Gravely ua kev zoo siab rau 100th hnub tseem ceeb ntawm Benjamin Gravely's plow patent hauv 2016.
Qhov twg yog xoom xoom tig mowers tsim?
muas Gravely xyoo 1982. Tau ib xyoo caum, ob lub npe tsim nyob rau hauv nyias lub xeev, tab sis niaj hnub no, ob lub npe yog tsim nyob rau hauv Brillion, ib lub zos ntawm tsuas yog 3,000 tus neeg nyob rau sab hnub tuaj-central Wisconsin.
Thaum twg cov tshuab txiav nyom tau tsim?
GRIT THIAB GUMPTION: PEB LUB TSEV 1916 . Txij li Benjamin Franklin Gravely tau txais nws thawj patent ib xyoo dhau los, peb tau ua haujlwm hnyav kom paub tseeb tias innovation tseem yog peb tus qauv. Saib seb peb cov kev coj noj coj ua ntawm Asmeskas tau hloov zuj zus ntau xyoo.
Puas ua rau lub tshuab txiav nyom hnyav?
"Peb txaus siab tso ob peb lub tshuab txiav nyom tsim los muab kev nplij siab txhua hnub thiab kev ua haujlwm ua lag luam." …
Pom zoo:
Leej twg tsim lub tshuab tsom iav qhov kaj?
Ib lub lens ib txwm tsom teeb rau cov ntsiab lus sib txawv nyob ntawm nws qhov wavelength. Nyob rau hauv lub xyoo pua kaum yim, Chester Moore Halltau tsim lub achromatic lens, uas siv ob lub lo ntsiab muag ntawm cov khoom sib txawv fused ua ke kom pom lub teeb ntawm txawv wavelengths mus rau tib lub ntsiab lus.
Leej twg tsim lub tshuab xaws?
Lub tshuab xaws yog lub tshuab siv los xaws ntaub thiab cov ntaub ntawv ua ke nrog xov. Cov tshuab xaws tau tsim nyob rau thawj zaug Industrial Revolution los txo tus nqi ntawm kev xaws xaws ua haujlwm hauv cov tuam txhab khaub ncaws. Leej twg invented tailoring?
Leej twg tsim lub tshuab kaw video?
Inventor Charles Paulson Ginsburg, lwm yam hu ua "leej txiv ntawm lub kaw lus video," yug hauv San Francisco xyoo 1920. Leej twg invented video cassette? Ginsberg, tus kws tshawb fawb ntawm Ampex Corporation, tau tsim lub tshuab kaw video hauv xyoo 1951.
Leej twg tsim lub tshuab raj ua ntej?
Ib tug parachute yog ib qho cuab yeej siv los ua kom qeeb ntawm kev txav ntawm ib qho khoom los ntawm ib qho chaw los ntawm kev tsim luag. Parachutes feem ntau yog ua los ntawm lub teeb, muaj zog ntaub, Ameslikas txhob lo lo ntxhuav, tam sim no feem ntau nylon.
Leej twg tsim lub tshuab fluorescence?
Tus kws tshawb fawb Askiv Sir George G. Stokes thawj zaug piav qhia txog fluorescence hauv xyoo 1852 thiab nws yog lub luag haujlwm rau coining lub sij hawm thaum nws pom tias cov ntxhia fluorspar tawm lub teeb liab thaum nws tau illuminated los ntawm ultraviolet.
