Qhov rooj ua tiav lawv cov hluav taws kub ntsuas los ntawm kev ntsuas nruj ntsuas ntsuas lawv cov kev txwv tsis pub muaj kev tiv thaiv ntau yam. Cov no yog ob qho tib si nquag thiab dhau kev sim ntsuas:
Kev tiv thaiv hluav taws kub ntsuas ntsuas ntsuas lub peev xwm ntawm lub qhov rooj teeb kom muaj hluav taws, haus luam yeeb thiab lwm cov roj cua.Kev ntsuam xyuas hluav taws xob tiv thaiv hluav taws xob tiv thaiv hluav taws xob cuam tshuam qee yam / kho vajtse uas pabcuam ua haujlwm thaum muaj hluav taws (piv txwv li:magnamatic liuas tuav cov qhov rooj qhib).Cov kev ntsuas tshwj xeeb ntawm txhua lub qhov rooj yuav vam khom qee yam ntxwv:
Hom qhov rooj raug sim (piv txwv liViav vias Hluav Taws Rooj, Zawv zawg Qhov RoojlossisHinged Hluav Taws Qhov Rooj).Cov khoom siv lub qhov rooj yog tsim los ntawm.Cov hluav taws xob tshwj xeeb tiv thaiv qhov rooj yuav tsum tau ntsib (1 teev, 2 teev, thiab lwm yam).Qhov rooj yog kuaj rau cov nplaim taws, kev sib txuam, cov pa luam yeeb / roj ua haujlwm thiab lub siab tsis kam. Yog tias tag nrho cov khoom siv no tau ntsib, tom qab ntawd lub qhov rooj tau muab lawv cov hluav taws.
