... effective length of nail 钉有效长度 effective span 计算跨度 effective supporting length at end of beam 梁端有效支承长度 ...
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staircase effective span 楼梯有效跨度
permissible effective span-to-depth ratio 允许跨高比
effective wing span 有效翼展
effective e span 计算跨度
cell span effective 单元格跨距
net span effective 钢结构翼缘板净跨度
Hoerner wing tips provide the largest effective span for a given geometric span or a given wing weight.
霍纳翼尖翼提供给定的重量最大有效跨度为给定的几何大跨度或。
The result of the practical test showed that the technique was a effective way to solve the problems of high stress road and large span intersection supporting.
工程实践表明，该技术是解决深井高应力软岩巷道、大断面交岔点等支护难题的有效途径。
The actual time span for the oldest effective source beds, both oil and gas, actually may be much greater.
最老的有效烃源岩的油和气的实际排烃时间，实际上可能大得多。
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