Txhawm rau hloov millimeters rau centimeters, koj yuav tsum paub tias cov khoom no yog dab tsi. Ua ntej koj yuav tsum nco ntsoov tias muaj kaum millimeters hauv ib centimeter. Ntxiv rau cov ntaub ntawv hais txog ntau npaum li cas millimeters nyob rau hauv ib centimeter, peb xav kom koj paub koj tus kheej nrog cov ntsuas ntsuas no kom ntxaws.
pes tsawg millimeter?
Ib millimeter yog ib txhiab ntawm ib 'meter', ib submultiple unit siv los ntsuas qhov ntev. Yog tias peb tig mus rau etymology, peb tuaj yeem paub tias lo lus no tuaj ntawm Fabkis. Lo lus, txhais los ntawm Fabkis, txhais tau tias ib txhiab ntawm ib 'meter'. Chav ntsuas no tau tshawb pom los ntawm tus lej lej Evangelista Torricelli, uas nws tus kheej yog los ntawm Ltalis. Nws yog ib tug tub ntxhais kawm thiab ua raws li Galileo, txuas ntxiv nws tus kws qhia kev ua haujlwm hauv kev ua haujlwm tshiab. Nws tus kheej tau los ua nto moo rau kev tsim txoj kev xav thiab lub tswv yim ntawm atmospheric siab.
Dhau li ntawm centimeter thiab millimeter, tseem muaj xws li ib chav ntsuas li nti. Nws yog siv nyob rau hauv teb chaws USA thiab yog sib npaug zos rau 25.5 millimeters.
centimeter yog dab tsi?
Ib centimeter yog ib lub hauv paus units, ib puas ntawm ib 'meter', nws yog siv nyob rau hauv txawv metric systems. Lo lus centimeter kuj tau qiv los ntawm Fabkis, thiab txhais tau tias "pua pua ntawm ib meter".
Lub tswv yim ntawm qhov ntsuas qhov ntev tau tsim tawm thaum lub sijhawm Tsov Rog Fab Kis Loj. Cov kws tshawb fawb Fabkis tau txiav txim siab los tsim ib yam dab tsi uas, thaum lub sij hawm poob tus qauv, nws yuav yooj yim rau ib tug neeg los tsim dua tshiab. Qhov txiaj ntsig ntuj no tau coj los ua lub hauv paus rau kev ntsuas. Txij li thaum lub sijhawm ntawd cov txheej txheem ntawm kev ntsuas lub ntiaj teb tau tshwm sim, cov kws tshawb fawb tau hais txog qhov ntsuas qhov ntsuas li ib 'meter'. Thiab tom qab ntawd, cov ntsuas hauv qab no tau tshwm sim: millimeters thiab centimeters. Tom qab lawv tsim los ntawm Fabkis cov kws tshawb fawb hauv xyoo pua 17th, cov ntsuas ntsuas no tau muab faib thoob plaws ntiaj teb. Tab sis lub metric system mus txog Russia tsuas yog nyob rau hauv lub xyoo pua 19th.
Hloov ua millimeters rau centimeters?
Yog li, peb kawm paub tias pes tsawg centimeter yog dab tsi thiab millimeter yog dab tsi. Hloov ua lwm yam millimeter mus centimeters? Hauv kev xyaum, qhov no yooj yim heev. Peb paub tias muaj raws nraim kaum millimeters hauv ib centimeter. Yog li, txhawm rau suav pes tsawg centimeters nws yuav yog los ntawm qee tus lej ntawm millimeters, koj yuav tsum faib cov millimeters los ntawm kaum. Cov lus teb tuaj yeem sau ua ib feem zoo tib yam, thiab yog tias tsim nyog, tuaj yeem txo qis. Cov txiaj ntsig kuj tuaj yeem sau ua tus lej. Thiab, raws li, txhawm rau hloov tus nqi rov qab rau hauv centimeters, koj yuav tsum tau muab faib los ntawm kaum, thiab tom qab ntawd peb yuav tau txais qhov xav tau.
Millimeters tuaj yeem hloov mus rau meters. Ib lub 'meter' yog ib puas centimeters, thiab ib centimeter yog kaum millimeters. Qhov no txhais tau hais tias tus naj npawb ntawm millimeters yuav tsum muab faib los ntawm ib txhiab, thiab peb yuav tau txais tus lej hauv meters. Raws li, txhawm rau hloov cov 'meter' rov qab mus rau millimeters, tus naj npawb ntawm metres yuav tsum muab sib npaug ntawm ib txhiab, ces peb yuav tau txais qhov tseeb.
pes tsawg millimeters nyob rau hauv ib square centimeter?
Square centimeter yog chav ntsuas ntsuas uas siv los ntsuas thaj tsam ntawm cov duab sib txawv hauv cov duab geometry. Peb tau paub txog chav tsev no hauv qib qis, thiab nws yooj yim heev los xam square centimeters. Ib square centimeter yog ib lub square uas txhua sab yog sib npaug rau ib centimeter. Cov square centimeters tuaj yeem ntsuas tsis tsuas yog cov duab geometric xws li square lossis duab plaub, qhov kev ntsuas no tseem siv tau rau cov voj voog, daim duab peb sab thiab lwm yam duab. Qhov no yog raws nraim qhov ntsuas ntsuas uas feem ntau yog siv los xam cov cheeb tsam. Yuav kom paub seb muaj pes tsawg millimeters nyob rau hauv ib square centimeter, koj yuav tsum tau muab ob qhov ntev ntawm ob sab ntawm lub square thiab muab faib rau lawv. Txij li txhua sab muaj qhov ntev ntawm ib centimeter, uas yog, kaum millimeters, ces yuav muaj ib puas square millimeters nyob rau hauv ib square centimeter.
