x joint meaning in English

x形接头

2 , in the experimental study , 12 joints tests are completed , including 5 uniplanar x joints loaded with axial forces , 3 uniplanar x joints loaded with in - plane bending , 4 multiplanar xx - joints loaded with axial forces , with the emphasis on the influence of and the existence of the out - of - plane braces , of which the multiplanar xx - joints tests is the first experiment project in china
其中，对等宽方管节点( = 1 . 0 )推求了考虑薄膜效应影响的极限承载力公式。 ( 2 )试验研究：本文共计进行了12个方管平面x型和空间xx型相贯节点试验研究，进一步加深对方管相贯节点的感性认识，了解其实际破坏模式。