Qhov hnyav ntawm lub hnab ntim khoom yog 0.5-3T, ntim yog 500-2300L, thiab ntim yog 5: 1 thiab 6: 1, uas tuaj yeem tsim raws li cov neeg siv khoom xav tau.Raws li cov khoom lag luam, nws tau muab faib ua ob pawg: cov thawv ntim khoom loj thiab cov thawv ntim me me, uas tuaj yeem siv rau ib-ti...
Nyeem ntxiv