在管道铺设或大型梁架焊接过程中，往往会遇到两个或多个不同轴线的大直径管件相交的情况。
During pipe line laying or large beam support welding, it often meets crossover of two or multi different axis large diameter pipe piece.
研制了一种在以激光束为中心轴的圆周方向均匀对称分布四个具有同轴汇聚气的双层送粉管的送粉喷嘴。
Developed a feeding nozzle which have four double-feeding pipes with co-axial shaping gas distributes on circle orientation of laser beam with uniformity and symmetry.
以向内发射同轴二极管为例从其电流电压关系及电子束运动特性方面验证了模拟的正确性。
Finally, inward-emitting coaxial diode was used as an example to validate the simulation of current-voltage correlation and characteristics of electron beam movement.
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