Cap rau tus ntxhais "Kuv xaws nws los ntawm dab tsi yog"
Lub tsho laus + lub tsho tiv no qub + daim ntawm plaub (xuab zeb) = lub kaus mom tshiab. KuvVisor thiab pob ntseg tig strips 2 cm dav thiab ntawm kab txaijkwv yees li 1.5 cm. Rau cov plaub hau txuag thiab rau qhov muag muag ntawm lub taub hau (ntawm yuav
Cov qhua tuaj noj mov, thiab ib tug tswvcuab ntawm tsis tau zoo dua) nyob rau sab saum toj ntawm ib feem ntawm cov qubCov hws - pob ntseg thiab sab saud cais, tsis zoo ntawm tus kheej.