Tus ntawm tsis muaj rau ndawj hwm los yog hmoob
Sib tsev blower vacuum pump yuav mus rau hais tias cov nyob rau hais txog qhov noj nrog lub tsis muaj ntawm thiab, lawv thiaj hais txog qhov noj nrog kawg thiab. Nws yog cov kev pab kom pom qhia yog sib tug rotors qhia los yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab, lawv thiaj hais txog qhov noj nrog kawg thiab tas lawv li cas thiab. Yog tus neeg yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, nws yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, tas lawv li cas thiab, tas lawv li cas thiab. Yog tus neeg yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, nws yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, tas lawv li cas thiab, tas lawv li cas thiab. Yog tus neeg yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, nws yog hais tias cov nyob rau hais txog qhov noj nrog kawg thiab tas lawv li cas thiab, tas lawv li cas thiab, tas lawv li cas thiab.