mais vs Nautical mais
mais thiab nautical mais yog ob chav siv los ntsuas qhov ntev thiab nyob deb. Ob leeg muaj keeb kwm qub piv rau SI units, thiab lawv tsis sib xws.
mais
Mile, tseem hu ua txoj cai mais lossis thaj av mais yog chav ntsuas ntsuas qhov ntev hauv lub tebchaws imperial units.
1 mais yog sib npaug rau 5, 280 ko taw lossis 1, 760 yards. Nws yuav muab 1609.34 meters thiab 1.60934 km. Ua ntej xyoo 1959, lub vaj tsis yog lub rooj sib txoos ua ib chav tsev thiab qhov ntev ntawm lub vaj txawv ntawm ib lub tebchaws mus rau ib lub tebchaws. Tab sis nyob rau hauv 1959 thoob ntiaj teb yard tau saws thiab mais los ua 1609.344 meters.
Lub hauv paus pib ntawm mais yog nyob rau hauv Rome thaum ub, qhov chaw Roman cov tub rog ntsuas qhov kev ncua deb mus los ntawm chav tsev nyob rau hauv "txhiab paces" hu ua mille passuum. Yog li ntawd, nws yog siv thoob plaws teb chaws Europe thiab European colonies. Txawm li cas los xij, qhov ntev npaum li cas txawv ntawm lub tebchaws mus rau ib lub tebchaws. Ntau lub mais tau siv ua ntej txhais cov mais thoob ntiaj teb. Tseem muaj cov kev ntsuas no tau siv nyob rau hauv cov xwm txheej uas tsis yog txheej txheem.
Scots mais, Irish mais, thiab Arab mais yog cov piv txwv ntawm kev hloov pauv siv thoob ntiaj teb. Lub metric mais yog kwv yees rau lub mais thoob ntiaj teb los ntawm kev sib npaug ntawm qhov tseem ceeb mus rau qhov ze tshaj 500. Lub metric mais yog 1500 meters thiab siv hauv kev ua kis las.
Nautical mais
Nautical mais yog ib chav tsev ntawm qhov ntev siv feem ntau hauv navigation. Hauv nws cov lus txhais, ib mais nautical yog qhov ntev ntawm ib feeb arc ntsuas raws txhua qhov meridian. Nws yog sib npaug rau qhov ntev ntawm ib feeb arc raws tus kab zauv.
Ib mais deb yog sib npaug rau 1.15078 mais lossis 6, 076.12 ko taw. Hauv metric units, nautical mais yog 1.85200 km lossis 1, 852.00 meters. Nws yog luv rau NM lossis nmi kom yooj yim.
Nautical mais feem ntau yog siv hauv kev taug kev, hauv kev lag luam naval thiab aerospace. Txawm hais tias muaj kev hloov pauv sai ntawm chav tsev nyob hauv lub ntiaj teb niaj hnub no, ib mais nautical yog qhov tseem ceeb ntawm kev taw qhia vim nws txoj kev sib raug zoo nrog qib thiab feeb. Nws yog ib qho yooj yim los ntsuas qhov deb ntawm daim duab qhia chaw hauv nautical mais thiab tuaj yeem nyeem tau yooj yim thiab xa mus rau.
Qhov nrawm ntawm lub dav hlau thiab feem ntau ntawm cov nkoj yog ntsuas hauv pob, uas yog ib chav tsev tau los ntawm mais nautical. Lub pob caus txhais tau tias yog ib mais nautical ib teev.
Miles thiab Nautical Miles txawv li cas?
• Ob mais thiab nautical mais yog cov qauv qub uas siv los ntsuas qhov ntev.
• Ib mais yog 5, 280 ko taw lossis 1609.34 meters, whereas ib mais nautical yog 6, 076.12 ko taw lossis 1, 852 meters. Yog li ntawd, ib mais nautical yog 1.15078 mais.
• mais yog siv hauv UK, USA, thiab Canada, hauv kev siv tib yam. Nws tau dhau los ua ib chav tsis siv neeg siv hauv kev siv (hauv kev tshawb fawb thiab engineering).
• Nautical mais tseem yog chav tsev tseem ceeb siv hauv kev taw qhia vim nws txoj kev sib raug zoo nrog kev ntsuas angular raws lub ntiaj teb nto.
