170 puag ncig convex iav Daim iav Daim iav

Cov lus piav qhia luv luv:

daim iav tsom iav ntawm cov iav me me puag ncig yog convex, thiab qhov pom ntawm qhov pom yog qhov tseeb ntau dua li cov phiaj xwm tsom iav tsom iav, yog li qhov teeb meem ntawm thaj chaw dig muag no tau daws. 2. Saib ntawm lub log rear. Nws muaj peev xwm tig lub iav me me puag ncig kom tiv thaiv nws los ntawm nplaum mus rau lub iav saib tom qab. Kho nws kom haum rau lub kaum sab xis uas koj tuaj yeem pom lub log tom qab. Koj yuav pom nws muaj txiaj ntsig thaum nres tsheb ntawm txoj kev nqaim thiab ntawm txoj kev tsheb (tshwj xeeb ntawm sab).