Cov yeeb nkab tshwj xeeb
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Stainless hlau elliptic ca elliptic raj nrog kiv cua zoo li zawj
Cov raj zoo li tau siv dav hauv ntau yam qauv, cov cuab yeej thiab cov khoom siv tshuab.Piv nrog rau cov raj puag ncig, lub raj tshwj xeeb zoo li feem ntau muaj lub sijhawm loj ntawm inertia thiab ntu modulus, muaj qhov khoov loj dua thiab torsional tsis kam, tuaj yeem txo qhov hnyav ntawm cov qauv, txuag steel.