4.How kom paub qhov tseeb thiab qhov tseeb ntawm cov tawv nqaij?
Feem ntau ntawm ob lub qhov muag. Tag nrho cov dermis muaj ib qho elliptical zoo, thiab cov tawv hluavtaws yog khov rau ntawm daim tawv nqaij, thiab lub dermis ntawm sab nraud ntawm lub dermis (cov tawv nqaij sib dhos yog yeej tsis yooj yim sua kom ua ib yam li lub dermis);
5. Koj puas siv hluav taws los cim tau qhov tawv thiab tsis tseeb?
Koj tseem muab cov tswv yim no tso tseg;
6, yuav ua li cas qhia thawj txheej ntawm daim tawv nqaij thiab ob txheej txheej ntawm daim tawv nqaij?
Rub lub tawv tawv, lub hau sab saum toj ntawm daim tawv nqaij tuaj yeem pom cov pores me me, thiab cov tawv nqaij ntawm cov tawv nqaij yuav deformed, thiab txheej thib ob ntawm daim tawv nqaij yuav tsis muaj cov cuab yeej deformation yam tsis muaj pores; ob txheej ntawm daim tawv nqaij yog ib qho nyuaj thiab pom tau zoo heev
7. Vim li cas cov txheej thib ob tsis haum rau cov rooj zaum tawv?
Qhov saum npoo ntawm ob txheej yog ib zaj duab xis tuab, tawv thiab airtight, tab sis qhov tseem ceeb tshaj plaws yog tias txheej thib ob tsis ruaj khov thiab yooj yim rau kev tawg.
8. Cov tawv hluavtaws puas tawv tawv?
Tsis yog.
