Yuav Ua Li Cas Txog Qhov Chaw Nres Nkoj Qhov Nco Tseg

Yuav ob txoj hlua khi dub ntawm ob qho chaw lossis mus rau khau. Qhov dav yuav luag yog ib centimeter. Txwv tsis pub, qhov ntev ntev dhau. Qhov xaus ob ntawm qhov khaus khiab khi tau sib khi los ua lub voj voos thiab muab nws tso rau ntawm ceg.

Txoj haujlwm yog li ntawm 1-2 cm hauv qab ntawm qhov chaw siab tshaj ntawm pob tw tom qab khau. Nws pom tau tias lub nplhaib elastic yuav entangle ob txhais ceg thiab nws tsis txaus. Tom qab ntawd lub nplhaib elastic yog muab tais rau hauv ib nrab, thiab ob hnub xaus feem raug kho nrog khau. Lub tshuab siv yog xaws rau ntawm khau raj kom pom qhov chaw zais feem ntau nrog kev dai me me. Nws tsis yooj yim pom tom qab xaws. Tom qab muab tso rau ntawm khau, ywj yuav tsis poob yooj yim vim tias txoj hlua khi qhwv ncig ntawm ob txhais ceg. Qhov qis qis yog tias khau kim lossis tawv khau lossis khau tshiab tshiab yuav tsis kam yuav xaws lawv; ntxiv rau, qee cov khau looj plab tsis tau dai kom zoo nkauj, thiab cov hlua khi yuav pom.