Thaum cov hlaws ntawm cov yas los yog roj hmab xaim saws xoob xoob txheeb ze rau cov hlau xaim hlua, yog tias tus lej ntawm cov xoob xoob tsis ntau, thiab tsis deb ntawm ib leeg, nws yog qhov zoo tshaj plaws los txiav tawm ib feem ntawm cov hlau pom ntawm xoob. hlaws thaum qhov ntev ntawm cov hlau pom ntawm cov hlaws yog txaus, thiab rov txuas cov hlau pom zoo siv. Yog tias cov hlaws xoob tawg tau tawg ntawm tag nrho cov hlau pom, cov hlaws xoob tuaj yeem tawg, thiab tom qab ntawd cov xaim xaim xaim tuaj yeem muab qhwv nrog cov ntaub nplaum tsis muaj dej. Los yog txiav cov hlua hlau los ntawm qhov chaw uas cov hlaws xoob xoob, tshem cov hlaws xoob, thiab txuas cov hlua hlau nrog ib qho kev sib koom ua ke kom siv txuas ntxiv. Yog hais tias cov yas los yog roj hmab xaim pom tshwm ovality hnav, nws qhia tau hais tias cov hlau pom tsis tuaj yeem tig rov qab thaum lub sij hawm txiav. Yog hais tias lub ovality ntawm txoj hlua hlau yog me ntsis, nws yuav tsum nres los xyuas qhov kev sib tw ntawm cov hlau pom. Nrhiav qhov laj thawj ntawm cov hlaws oval hnav. Thiab kho cov txheej txheem tsis xws li kev pub ceev ntawm cov hlau pom kom rov qab cov hlaws mus rau ib qho zoo li cylindrical. Txawm li cas los xij, yog tias lub ovality ntawm cov hlaws dai yog qhov hnyav, kev txiav ntawm cov hlau pom yuav tsum tau nres tam sim ntawd, thiab nrhiav qhov ua rau lub ovality ntawm cov hlaws dai, thiab kawm txog kev hloov kho. Lub ntsiab ua haujlwm yog vim li cas rau qhov hnav ntawm ovality ntawm cov hlaws dai ntawm cov yas thiab roj hmab xaim pom yog: tus naj npawb ntawm cov kev sib hloov ua ntej tsis txaus lossis qhov kev sib hloov ua ntej tsis ua tiav; Qhov laj thawj ntawm kev tsim cov hlua khi hlua khi yog: qhov kev sib khi zoo ntawm cov hlaws thiab cov hlua hlau hlau tsis zoo, cov hlaws thiab cov hlua hlau hlau tsis ruaj khov uas ua rau muaj kev sib hloov. Yog vim li cas rau lub ovality ntawm lub caij nplooj ntoos hlav hlau pom yog feem ntau yog ua ntej - lub siab ntawm lub caij nplooj ntoos hlav yog loj heev thaum lub sij hawm sib dhos cov hlaws dai, thiab cov hlaws dai yog nruj nreem tsau rau ntawm txoj hlua hlau los tiv thaiv nws los ntawm rotating dawb.
