1. Qhov kev ncua deb ntawm cov transducers thiab transmitter yog dab tsi?
2. Cov khoom siv ntawm cov yeeb nkab, cov yeeb nkab phab ntsa thickness thiab cov kav dej txoj kab uas hla.
3. Lub neej ntawm cov kav dej;
4. Hom kua dej, txawm tias nws muaj impurities, npuas, thiab cov yeeb nkab yog dej puv lossis tsis muaj kua.
5. Dej kub;
6. Txawm hais tias qhov chaw teeb tsa muaj qhov cuam tshuam (xws li kev hloov pauv zaus, muaj zog sib nqus, thiab lwm yam);
7. Txawm hais tias cov khoom siv hluav taws xob thiab hluav taws xob siv tau ruaj khov;
9. Seb qhov kev sib txuas lus wireless lossis xaim xaim, qhov twg ntawm kev sib txuas lus.
Post lub sij hawm: Mar-24-2023