Lero tikambirana za kulongedza kwamkati Mosasamala kanthu za kuchuluka kwa zinthu zomwe timagula, timakopeka ndi zopaka zokongola zamkati pamene tilandira chidutswa cha chovala. 1, thumba lathyathyathya thumba thumba Lathyathyathya thumba thumba nthawi zambiri ntchito ndi pepala bokosi, zambiri ma CD mkati, udindo wake waukulu ndi kulimbikitsa ...
1. Stone Paper ndi chiyani? Mapepala a miyala amapangidwa ndi miyala yamchere yamchere yokhala ndi nkhokwe zazikulu komanso kugawa kwakukulu monga zopangira zazikulu (calcium carbonate zili 70-80%) ndi polima ngati zinthu zothandizira (zomwe zili ndi 20-30%). Pogwiritsa ntchito mfundo ya polymer interface chemistry ndi ...
Chitetezo cha chilengedwe ndi mutu wamuyaya wa kusunga malo okhala anthu. Ndi kupititsa patsogolo kuzindikira kwa anthu za chitetezo cha chilengedwe, kusindikiza kobiriwira ndi njira yosapeŵeka ya chitukuko cha makina osindikizira ndi kusindikiza. Kukula ndi kugwiritsa ntchito env...