Cov Khoom Noj Qab Haus Huv thiab Cov Khoom Noj Hiav Txwv

Lub rooj tso saib ntses, tseem hu ua lub rooj tso saib ntses, yog ib yam khoom siv tshwj xeeb uas feem ntau siv hauv cov khw noj mov, cov khw muag khoom ntses, thiab cov khw muag khoom noj kom pom thiab tswj qhov tshiab ntawm ntses thiab lwm yam khoom ntses. Cov rooj no feem ntau yog tsim los khaws cov khoom ntses ntawm qhov kub qis, siab tshaj qhov khov, los ntawm kev ncig cua txias lossis siv cov txaj dej khov. Qhov kub txias pab qeeb qeeb kev puas tsuaj ntawm ntses thiab tiv thaiv kev loj hlob ntawm cov kab mob, ua kom cov ntses tseem tshiab thiab pom zoo rau cov neeg siv khoom. Lub rooj feem ntau muaj qhov chaw slanted lossis perforated kom cov dej khov yaj ntws tawm, tiv thaiv ntses los ntawm kev zaum hauv dej thiab tswj lawv qhov zoo. Ntxiv nrog rau kev khaws cia qhov tshiab, cov rooj no kuj txhim kho qhov pom ntawm cov ntses, ua rau nws yog qhov chaw tso saib zoo nkauj thiab huv si rau cov neeg siv khoom uas tab tom nrhiav kev xaiv cov ntses.