Kev ntim khoom yog hais txog cov txheej txheem ntawm kev siv cov thawv ntim, qhwv, ntim khoom, thiab kho kom zoo nkauj los tuav cov khoom. Nws yog ib qho kev txuas ntxiv ntawm cov txheej txheem tsim khoom hauv cov txheej txheem kev faib khoom thiab qhov tseem ceeb ntawm cov khoom lag luam nkag mus rau hauv cov khoom siv thiab kev siv. Lub luag haujlwm ntawm kev ntim khoom muaj xws li: ① paub txog tus nqi thiab siv tus nqi ntawm cov khoom thiab ua haujlwm raws li kev ua kom muaj nuj nqis; ② tiv thaiv cov khoom los ntawm tej yam ntuj tso xws li tshav ntuj, cua, nag, thiab plua plav, tiv thaiv kev poob vim evaporation, to, melting, paug, sib tsoo, compression, spillage, thiab tub sab nyiag; ③ pab txhawb kev khaws cia, kev thauj mus los, kev xa tawm, thiab kev muag khoom hauv cov txheej txheem xa tawm, xws li kev thauj khoom thiab kev thauj khoom, cov khoom muag, stacking, shipping, txais, transshipment, thiab kev muag khoom suav; ④ Cov khoom zoo nkauj, nyiam cov neeg siv khoom, thiab txhawb kev muag khoom.
Ntim yog hais txog ntau yam kev ua ub no nrog rau kev tsim thiab tsim cov ntim khoom lossis cov ntaub qhwv. Raws li kev txhawb nqa kev lag luam rau kev lag luam hauv lub tebchaws, ntim tau loj hlob nrog rau Tuam Tshoj txoj kev tsim kho kev lag luam, tshwj xeeb tshaj yog txij li kev hloov kho thiab qhib. Raws li kev lag luam kev lag luam kev lag luam, kev lag luam ntim tau tsim sai heev, tsim cov txheej txheem niaj hnub ua tiav nrog cov ntawv, yas, hlau, iav, luam ntawv, thiab tshuab ua nws cov khoom tseem ceeb, muaj qee yam cuab yeej siv niaj hnub thiab khoom siv. Tuam Tshoj txoj kev lag luam ntim khoom tau ua tiav nyob rau hauv tsuas yog 20 xyoo uas tsim lub teb chaws siv ze li ntawm 40 xyoo kom ua tiav, hloov pauv qhov xwm txheej ntawm "thawj- cov khoom lag luam, thib ob- chav ntim khoom, thiab thib peb- cov nqi hauv chav kawm." Kev lag luam ntim tau hloov zuj zus los ntawm kev sib cais thiab rov qab mus rau hauv kev ua tiav kev lag luam nrog qee yam cuab yeej siv niaj hnub thiab cov cuab yeej siv thiab ntau pawg. Ib tug yam ntxwv tseem ceeb ntawm txoj kev loj hlob tam sim no ntawm kev lag luam ntim khoom yog kev lag luam thoob ntiaj teb kev lag luam ntim khoom lag luam, kev lag luam thoob ntiaj teb kev lag luam ntim khoom lag luam, thiab kev sib koom ua ke ntawm kev lag luam ntim khoom lag luam hauv ntau lub teb chaws.
Taug kev mus rau hauv lub khw muag khoom, yuav luag txhua tus nkag siab tias ntim khoom yog dab tsi. Txawm li cas los xij, ib zaug koom nrog kev ntim khoom, ib qho feem ntau cuam tshuam los ntawm cov khoom lag luam dazzling ntawm cov khoom lag luam, ntau hom ntawv ntim, thiab cacophony ntawm "cov lus qhia," ua rau nws nyuaj rau kev nkag siab cov ntsiab lus tseem ceeb. Txawm hais tias ntau lub tebchaws tau muab cov ntsiab lus meej thiab meej meej ntawm kev ntim khoom, xws li Tebchaws Meskas txhais tau tias: ntim khoom yog kev npaj ua haujlwm ua tiav rau kev xa khoom thiab muag khoom; Lub tebchaws United Kingdom txhais nws li: kos duab, kev tshawb fawb, thiab thev naus laus zis ntawm kev npaj cov khoom thauj thiab muag; thiab Canada txhais nws li: cov cuab yeej siv los xa cov khoom ntawm cov neeg xa khoom mus rau cov neeg siv khoom lossis cov neeg siv khoom thaum tswj hwm lawv txoj kev ncaj ncees. kuv lub teb chaws tau hais ntev txog kev ntim khoom raws li: lub ntsiab lus dav dav rau cov khoom siv siv los tiv thaiv cov khoom thaum lub sij hawm faib khoom, pab txhawb kev khaws cia thiab kev thauj mus los, thiab txhawb kev muag khoom.
