TsimTsev kawm ntawv qib thiab universities

Ib zaug thiab rau tag nrho peb to taub yuav ua li cas muaj ntau yam kilometers nyob rau hauv ib mais

Dua li ntawm qhov kev ntsuam ntawm lub ntiaj teb no mus standardize, rau hnub no muaj duplicate ntsuas system. Piv txwv li, nyob rau hauv tej lub teb chaws, ntsuas mus siv mais kev deb thiab ob txhais taw. Peb yog li ntawd, accustomed mus rau lub metric system, uas qhov kev ncua deb qhia nyob rau hauv mais, tej zaum qhia txog ib tug dog dig tus neeg mus rau hauv ib tug stupor. Qhov tsab xov xwm no yog tsim los pab tus neeg twg uas muaj teeb meem nrog lub imperial system. Yog li ntawd, yuav ua li cas nyob rau hauv lub American mile kilometers?

Nyob rau hauv thiaj li tsis mus ris tus nyeem ntawv nrog rau cov keeb kwm ntawm lub hauv paus chiv keeb ntawm no unit, nws yog txaus hais tias nws originated li thaum ntxov raws li lub Roman faj tim teb chaws. Nws yuav siv mas nyob rau hauv lus Askiv-hais lus lub teb chaws thiab qub British zos. Nyob rau ntawm ib lub sij hawm lub Lavxias teb sab faj tim teb chaws yuav luag tag tsiv mus rau ib tug zoo xws li cov system.

Qhov yooj yooj yim lo lus nug "yuav ua li cas muaj ntau yam kilometers ib mais" es tsis yooj yim teb. Yog vim li cas? Vim hais tias tus nqi yuav txawv nyob rau hauv tej lub teb chaws thiab regions. Nws yog ib zajlus kom xav hais tias cov nyeem ntawv xav nyob rau hauv tus txheej txheem mais, tab sis, ces complexity: tshwm sim li av mais, thiab cov hiav txwv. yog tsis pom zoo kom sib tov rau lawv, vim hais tias rau txhua txhua 10 "yuam" mais koj tau txais ib 2 kilometer sib txawv - ib tug tsis tsim nyog kev ua yuam kev, txawm niaj hnub suav.

Ua ntej ntawm tag nrho cov, cia peb hais ntau npaum li cas kilometers ib nautical mais - raws nraim 1852 meters. Nws tsis yog ib txwm. Tab sis peb xav nyob rau hauv tsuas yog tus tam sim no tus nqi. Nautical mais, oddly txaus, kuj siv nyob rau hauv chaw ua dav hlua. Yog hais txog cov mais «NM», tsis zoo li teb chaws - «M».

Tam sim no peb yuav tsum xyuas seb yuav ua li cas muaj ntau yam kilometers nyob rau hauv ib mais. Raws li koj tau pom, lub ntsiab txhais ntawm "teb chaws" yog tu, vim hais tias yog hais tias tsis hais txhais, lub neej ntawd yog tias cov kev ntsuam no yog ua los nyob rau hauv tus txheej txheem Anglo-American mais. Qhov no sib npaug mile 1609 meters (nrog ib tug me me paj tau paj ntawm kev ua yuam kev).

Thaum suav tsis muaj kev xav, koj muaj peev xwm tsuas muab lub xov tooj ntawm mais rau lub 1.5 - nws yog yooj yim los mus suav hais lus, tab sis cov neeg ntawm no xam yog tsis tshua muaj tsis tshua muaj. Qhov no yog pab tau thaum muaj yog tsis muaj sij hawm nyeem los yog tsis muaj kuv lub tshuab xam zauv. Piv txwv li, thaum koj nyeem ib phau ntawv, thaum lub sij ntev tsis txawv. Txawm li cas los, rau loj suav yuav zoo dua yog siv lub caij nyoog tseem ceeb.

Thiab qhov teeb meem ntawm neeg txhais lus tsis yog ib tug-ib tog. Koj yuav xav tsis thoob li, tab sis thaum lub sij hawm, thaum koj hais "yuav ua li cas muaj ntau yam kilometers nyob rau hauv ib mais", cov neeg siv cov imperial system, tej zoo helplessness nrog meters. Txhua yam nyob tsuas yog nyob rau qhov zoo ntawm system neeg siv yuav tau siv. Qhov zoo ces, hais tias nyob rau hauv tag nrho cov complex pab kiag li lawm thiab seev yog ob teev rau lub yooj yim ntawm cov neeg siv los ntawm txawv teb chaws. Nyob rau hauv tag nrho cov lwm tus neeg mob yuav tsum tau cia siab tsuas yog nyob rau nws zauv peev xwm tab sis kev nco. Tom qab tag nrho, cia li paub yuav ua li cas muaj ntau yam kilometers nyob rau hauv ib mais, yog tsis txaus, peb yuav tsum tau nco ntsoov lub caij nyoog muaj nuj nqis thaum yuav tsum tau. Yog li ntawd nws tsis raug mob ib tug me ntsis xyaum nyob rau hauv tus neeg txhais lus los ntawm ib tug system mus rau lwm lub.

Rau yam tsawg kawg ib lub lim tiam, muab nws ib tug txoj cai txhais tag nrho cov kilometers mus mais, qhov uas koj tuaj nyob ua tim khawv rau qhov ntev. Koj yuav pom tau nyob rau hauv ib tug ob peb hnub koj yuav nqa tawm xws li suav tsis yig.

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