Dab tsi yog qhov loj tshaj plaws yas khi coil uas peb tuaj yeem ua tau?

Dab tsi yog qhov loj tshaj plaws yas khi coil uas peb tuaj yeem ua tau?

Raws li peb paub qhov loj tshaj ntawm cov yas ib kauv kauj loj yog 50mm. lub reguar loj daim ntawv 6mm mus rau 50mm. qee cov neeg siv khoom muaj phau ntawv tuab tshaj 50mm. yuav khi li cas? ntawm no peb muaj kev daws teeb meem tshiab, peb lub tuam txhab pab cov neeg siv khoom daws qhov teeb meem thiab ua cov pwm loj tshaj plaws los tsim cov 66mm dub yas ib khi hlua khi. thov xyuas raws li cov duab hauv qab no.

Zoo, tej zaum koj yuav nug txog qhov loj tshaj khi hlua khi li cas nrog phau ntawv? uas yog cov lus nug zoo, peb yuav qhia koj yuav ua li cas khi nws hauv cov kauj ruam tom ntej.