Peb tuaj yeem hais tias kev nqus yog thaum ib yam dab tsi coj mus rau lwm yam khoom. Cov khoom uas nqus dej muaj xws li; sponge, napkin, ntawv phuam, ntsej muag daim ntaub, thom khwm, ntawv, paj rwb pob. Cov khoom uas tsis nqus dej muaj xws li; Styrofoam, ziplock hnab, wax ntawv, aluminium foil, sandwich wrap.
Vim li cas cov khoom nqus dej?
yog vim li cas nws mos thiab squishy (thiab yog vim li cas nws nqus dej!) vim tag nrho cov qhov hauv. Cov discontinuities nyob rau hauv tej khoom yog hu ua pores. Nrog rau kev sib xyaw ntawm kev tsav tsheb sib tham saum toj no (qhov laj thawj rau nqus) thiab porosity (qhov chaw kom nqus tau) koj muaj kev nqus.
Cov ntaub ntawv tawv puas nqus dej?
(c) Cov khoom siv hauv tsev Nws tsis tas yuav tshwm sim rau cov menyuam yaus uas 'nyuaj' cov ntaub ntawv xws li ntoo thiab pob zeb nqus dej. … Cov menyuam yaus tuaj yeem sim ntau yam khoom xws li yas, hlau, ntau hom ntoo thiab cib rau lawv cov khoom nqus dej.
nws hu li cas thaum cov khoom nqus dej?
Hygroscopy yog qhov tshwm sim ntawm kev nyiam thiab tuav cov dej molecules los ntawm kev nqus los yog adsorption los ntawm ib puag ncig ib puag ncig, uas feem ntau nyob ntawm qhov qub lossis chav sov.
Cov ntaub ntawv twg nqus dej sai tshaj?
daim ntawv yuav nqus dej sai tshaj vim nws nyias.
