Rau txhua lub tsev kho mob, cov khoom pabcuam ua ntej yuav tsum npaj kom muaj kev pabcuam zoo rau yav tom ntej kev ua haujlwm.Yog muaj ntau lub npe thiab qauv ntawm cov khoom pabcuam thawj zaug hauv khw. Thaum tam sim no, cov nrov tshaj plaws cov ncab yog cov yas ncab thiab cov ntaub so hnab ntaub. Piv nrog ob qho, yav tas los yog dav siv rau qhov yooj yim vim li cas nws muaj qhov zoo.
Ua ntej txhua yam, cov yas kav ntev tsis tsis yooj yim raws li koj xav, tab sis, theej muaj zog thiab kav ntev. Nws yog ua los ntawm cov khoom siv siab molecular PE. Cov khoom siv yog qhov tsis zoo thiab tsis muaj dab tsi, thiab yog ib puag ncig zoo. Dhau li muaj zoo rigidity, nws tseem muaj qee qhov elasticity. Kev dag nws yuav tsis hnov mob heev thiab ua rau koj lub cev mob. Thib ob, nws qhov zoo yog lub teeb heev, uas tuaj yeem txo lub nra hnyav rau cov neeg nqa lub nra, kom cov neeg nqa lub ntsej muag nqa tau zoo mloog rau kev sib npaug thiab xa cov raug mob mus rau tom tsev kho mob ntau dua yam muaj kev nyab xeeb thiab sai. Tom qab ntawd, cov roj ncab tuaj yeem siv sijhawm ntev dua vim tias PE cov khoom muaj cov khoom tiv thaiv kev laus. Ntxiv mus, tus qauv tsim qauv yog yooj yim thiab yooj yim khaws. Thaum kawg, qhov hnav tsis kam kuj muaj qhov zoo, txawm tias koj taug kev ntawm cov roob uas muaj zog, yuav tsis muaj kev hnav ntau. Tsis tas li ntawd, nws tuaj yeem ua tiav nrog feem ntau kho lub taub hau, thiab muaj nruab nrog txoj siv sia thiab kev siv txoj siv sia, kom thiaj li tiv thaiv tau cov neeg raug mob zoo dua.
Ntawm chav kawm, cov yas rub tawm tau yooj yim rau kev tswj. Tom qab siv tas, nws tsuas yog yuav tsum tau muab cov ntaub so huv uas muaj ntaub paj rwb huv huv thiab tsis tas yuav ntxhua nrog cov roj tu thiab tiv thaiv roj, uas tuaj yeem txuag tau ntau cov nqi kho rau cov khoom lag luam thaum muaj xwm txheej ceev hauv tsev kho mob. Shanghai EMSS tuam txhab kev kho mob yog tus thawj coj hauv kev lag luam. nws cov khoom yog qhov zoo tshaj plaws thiab tsim nyog ntseeg.