Luv luv hluav taws xobHais txog ib hom lauj tshib nyob qhov twgvojvoog ntawm curvature (r)Sib npaugTxheej hauv lub taub (d)Ntawm cov yeeb nkab, qhia raws liR = DCov. Ntawm no,DTxhais tau lub lauj tshib txoj kab, thiabRSawv cev raukhoov tshuab hluav taws xob.
Luv vojvoog lauj kaub yog feem ntau siv nyob rau hauvTsawg - cua siab kua dejLossis hauv kev teeb tsa qhov twgChaw Cuam TshuamTxwv txiav kev siv ntev - lub log me.
Kev Txiav Txim Siab Tshwj Xeeb
Hom: 180d Luv vojvoog lauj tshib.
Cov khoom siv: ASTM A234 WPB.
Qhov loj me: 3 nti.
Phab ntsa tuab: Schexxs.
Tiv Tauj Peb RauASTM A234 WPB luj tshib sr:pipe@gneetube.com
