Elliptical raj ob-txheej txheej yooj yim hlau khw

Nov yog American style ob pob tawb hlau khw, nrog cov kab ua rog thiab hauv qab cov raj tsim ntawm cov kav hlau sab saud, cov kav hlau sab saud. Txawm hais tias tus qauv yooj yim, nws yog qhov ruaj khov thiab ruaj khov.
Lub tawb nqa khoom lag luam no yuav tsum muaj ib lossis ob lub tawb nqa khoom yuav tsum muab tso ua ntej siv, uas haum rau cov khw muag khoom hauv qab 30 liv ntawm kev ua lag luam.
Los ntawm txoj kev, lub tawb nqa khoom no yog nruab nrog 4- nti (φ 100mm) log los ntawm lub neej ntawd, thiab lub log log yog taw qhia. Yog tias koj xav tau hloov qhov ntsuas ntawm lub log, koj yuav tsum tau kho cov pwm. Tau kawg, yog tias koj muaj cov kev xav tau lossis tsim qauv, thov hu rau peb.

Cim npe nrov: elliptical raj ob-txheej txheej yooj yim steel khw muag khoom laub, Tuam Tshoj elliptical raj ob chav khw, Hoobkas