(1) Cov neeg hais lus muaj ob lo lus (ob tug ua). Thaum ib tus hais lus yog siv, ob lub pins tsis yog polarized. Thaum ntau tus neeg hais lus tau siv nyob rau tib lub sijhawm, ob lub pins yog polarized.
(2) cov neeg hais lus muaj ib daim ntawv cones, uas feem ntau yog xim dub, tab sis kuj dawb.
(3) cov neeg hais lus tuaj ntau daim duab, suav nrog puag ncig, xwmfab, thiab oval.
(4) Muaj cov hlau nplaum nyob sab nraum qab ntawm tus hais lus hais lus. Thaum cov hlau thaiv hlau hlau tau siv los kov cov hlau nplaum ntawm cov lus sib nqus sab nraud, koj tuaj yeem hnov muaj cov hlau nplaum. Tsis muaj qhov kev xav zoo li no hauv tus hais lus sib nqus sab hauv, tab sis muaj cov hlau nplaum sab hauv lub plhaub.
(5) Cov neeg hais lus tau muab ntsia rau ntawm lub tshuab vaj huam sib luag lossis hauv lub thawv suab.
Cov yam ntxwv yooj yim ntawm cov neeg hais lus
Dec 04, 2024
Tso lus