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E-iav sib sau rov qab rau tshuaj tsuag
1.Qhov runnability rau txau ua haujlwm,
.Moderate ntub-tawm ceev,
.Asy roll-tawm,
.Ashyranoval ntawm npuas,
.No lub caij nplooj ntoo hlav rov qab rau hauv cov ces kaum ntse,
.Txhob cov khoom siv kho tshuab
2.HyDRolytic tsis kam nyob rau hauv feem, haum rau cov tshuaj tsuag ceev-nce nrog cov neeg hlau
