Cov khoom siv lim cov tuam txhab piav qhia qhov zoo ntawm cov khoom siv lim.

Cov khoom siv lim cov tuam txhab piav qhia cov txiaj ntsig hauv qab no ntawm cov khoom siv lim dej:

1. Muab kev lim dej kom zoo: Cov lim dej tuaj yeem tshem tawm cov impurities, tshem tawm cov khib nyiab, cov kab mob, kab mob, thiab lwm yam khoom los ntawm dej los yog cua, tswj cov purity ntawm cov kua los yog gases.

2. Kev txhim kho dej lossis huab cua zoo: Cov lim dej tuaj yeem tshem tawm cov khoom tsis zoo thiab txhim kho dej thiab huab cua zoo. Qhov no yog qhov tseem ceeb rau cov dej haus, pas dej da dej, kev lag luam, khoom siv kho mob, thiab lwm yam kev siv.

3. Txhim kho lub neej ntawm cov cuab yeej siv: Cov lim dej zoo tiv thaiv cov khoom thiab cov av los ntawm kev nkag mus rau cov khoom siv xws li twj, li qub, thiab lub tshuab cua sov, txo cov khoom puas thiab kho zaus, yog li txuas lub neej ntawm cov khoom siv.

4. Txuag hluav taws xob thiab cov nqi: Los ntawm kev txo cov kev pheej hmoo ntawm cov khoom siv sib kis, cov khoom siv lim tuaj yeem txo cov kev siv hluav taws xob thiab cov nqi khiav lag luam. Tsis tas li ntawd, tsis tu ncua hloov cov ntsiab lus lim lossis cov ntxaij vab tshaus yog kev lag luam ntau dua li hloov tag nrho cov kab ke.

5. Yooj yim rau siv thiab khaws cia: Cov khoom siv lim feem ntau yooj yim rau nruab thiab khiav lag luam, thiab kev kho lossis lim cov khoom hloov pauv yooj yim raws li xav tau. Kev tu vaj tse yog qhov tsawg, tsis tas yuav tsum muaj kev cuam tshuam los ntawm phau ntawv.

Cov no yog qee qhov zoo ntawm cov khoom siv lim. Cov lim dej sib txawv thiab cov lus qhia tshwj xeeb tuaj yeem muab cov txiaj ntsig tshwj xeeb thiab tsim nyog.