Qhov tseeb, tsis muaj teeb meem dab tsi hauv lub neej niaj hnub, vim lawv qhov chaw sib txawv, lawv yuav muaj qee yam kev nyab xeeb thaum siv. evaporative cua txias yog tib yam. Cov xwm txheej hauv qab no yuav tshwm sim hluav taws. Yog li ntawd, peb yuav tsum ua haujlwm tiv thaiv ua ntej kev teeb tsa thiab siv, kom txo lossis e ...
Nyeem ntxiv