multi-leg cast steel node 多支腿铸钢节点
Similarly, the last leg in the access path graph is evaluated eight times, once for each record produced by the first NLJOIN node.
同样，访问路径图的最后一步要评估8次，通过第一个NLJOIN节点产生的每条记录都要评估一次。
The second leg of the NLJOIN node is similar to that of the first table
NLJOIN 节点的第二步类似于第一个表的第二步
When the leg number of circuit is big and the node point number is small, it is a better choice to use the node voltage method.
当电路的支路数目较多而节点数目较少时，运用节点电压法是一种更好的选择。
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