Tav Pu Laws Cov Menyuam Rau B3
Cov lus piav qhia luv luv:
Dov cov menyuam rau B3 nws yog lub ntsiab lus spare rau steel bar Bgzl-40b3 ua kom zoo nkauj xov kom ua rau cov duab, du thiab kev 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 B3
Nws yog qhov chaw spare rau steel bar bgzl-40b3 ta tev xov kawg ua kom cov duab, du thiab kev 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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