Hlau ncaj & txiav tshuab yog ib qho ntawm cov tshuab ua hlau nrov;

Peb muaj ntau hom kev ncaj thiab txiav tshuab uas tuaj yeem tsim rau ntau txoj kab uas hla hlau;

1. 2-3.5 hli

Hlau txoj kab uas hla: 2-3.5 hli

Txiav ntev: Max. 2m

Kev txiav ceev: 60-80 'meter' / feeb

Haum rau kev ua lub tawb qaib, feem ntau yog cov khoom siv pabcuam nrog peb lub tshuab vuam tawb qaib;

2. 3-6 hli

Hlau txoj kab uas hla: 3-6 hli

Txiav ntev: Max. 3m lossis 6m

Kev txiav ceev: 60-70 'meter' / feeb

Haum rau kev ua vaj huam sib luag laj kab, lossis BRC mesh, ua cov khoom siv pabcuam nrog peb lub tshuab vuam BRC mesh thiab 3D vaj huam sib luag laj kab vuam tshuab;

3. 4-12 hli

Hlau txoj kab uas hla: 4-12 hli

Txiav ntev: Max. 3m lossis 6m

Kev txiav ceev: 40-50 'meter' / feeb

Haum rau kev ua cov ntaub thaiv qhov txhab, ua cov khoom siv pabcuam nrog peb lub tshuab vuam ntaub thaiv qhov txhab;

Yog tias koj muaj lus nug txog peb lub tshuab ua hlau, txais tos xa lus nug nrog koj qhov xav tau;