Saw roj

Cov yam ntxwv ntawm kev ua tau zoo:

zoo hnav tsis kam thiab kev sib txhuam tsim nyog, nce ubiedity, txo kev siv zog thiab muaj kev hloov zoo; Kev ua tau zoo viscosity, txhawm rau kom muaj kev sib kis tau zoo ntawm lub zog nyob rau hauv cov xwm txheej hnyav, cov khoom siv roj hmab muaj qhov hloov tau zoo los tiv thaiv kev foob tsis ua haujlwm;

Cov Khoom Tsim Nyog:

haum rau ntau yam ua kua txuas txuas thiab cov tshuab nqus kua hluav taws xob nrog kev siv tshuab;