Qhov zoo ntawm cov hnab ntim khoom yas thiab kraft ntawv hnab

Ob lub hnab ntim cov hnab yas thiab cov hnab ntawv yog ib qho ntawm cov ntim ntau tshaj plaws hauv peb lub neej txhua hnub.Ob leeg muaj lawv tus kheej zoo thiab lawv cov koob meej yog qhov zoo ib yam.

Qhov zoo ntawm cov hnab ntim cov hnab yas thiab cov hnab ntawv

Kev siv tus nqi ntawm cov hnab ntim cov hnab yas tau txais ntau dua thiab siab dua, noo noo-pov thawj, ruaj khov, thiab tus nqi qis;

Qhov zoo ntawm cov hnab ntawv yog kev tiv thaiv ib puag ncig;

Qhov txawv ntawm cov hnab ntim cov hnab yas thiab cov hnab ntawv

1. Txawm hais tias kraft ntawv hnab muaj peev xwm tiv thaiv ib puag ncig, cov hnab ntawv ua rau muaj kev puas tsuaj loj rau hav zoov.Kev rhuav tshem hav zoov thiab cov hnab ntawv xav tau dej thiab hluav taws xob.Yog li ntawd, cov hnab ntawv tsis yog ib puag ncig zoo dua li cov hnab yas.Kev siv ceev ceev ntawm cov hnab yas zoo ib puag ncig yog qhov tsim nyog rau kev tiv thaiv ib puag ncig.

2. Kev tiv thaiv muaj nuj nqi: cov hnab ntawv tsis yooj yim, cov hnab yas muaj lub zog tensile siab, siab elongation, thiab tsis yooj yim rau kev puas tsuaj.

3. Kev tiv thaiv ib puag ncig: ntawv yog yooj yim rau decompose, thiab hnab yas tsis yooj yim rau degrade.

4. Scope ntawm kev siv: Lub hnab ntim yas yog siv ntau dua li cov hnab ntawv.Cov hnab yas tuaj yeem siv rau kev khaws cia cov khoom mus sij hawm ntev, thaum lub hnab ntawv muaj cov dej tsis muaj zog thiab tsis muaj dej tsis zoo, uas tsis tsim nyog rau kev khaws khoom noj.

5. Kev tiv thaiv dej noo: cov hnab ntawv muaj cov dej tsis zoo, thaum lub hnab yas muaj cov dej tsis zoo.