Tav Pu Laws Cov Menyuam Rau Cov Menyuam Rau B2
Cov lus piav qhia luv luv:
Dov cov menyuam rau B2 nws yog lub ntsiab lus spare rau steel bar bgzl-40b2 thawb xov kawg kom ua ib hom duab, du thiab txoj xov du thiab txuag koj tus nqi. Cov lus qhia tshwj xeeb: E, F, H rau 60 degree xe, xf, xg, xh rau 70 degree
Dov Cov Menyuam Rau B2
Nws yog lub ntsiab lus spare rau steel bar bgzl-40b2 rib pev xov kawg kom ua ib hom duab, du thiab txoj xov du thiab txuag koj tus nqi.
Cov Lus Qhia Tshwj Xeeb:
E, f, g, h rau 60 degree
Xe, XF, XG, XH rau 70 degree
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