专门配置的旁轴气道，能满足气体保护焊和冷却工件的要求。
Special configuration, can satisfy the airway by axial gas shielded welding workpiece and cooling.
推导并证明了旁轴波动方程的解与复源点方法之间的一致性关系。
The derivation of the relationship between the paraxial wave equation and the complex source points is given and proved.
对复杂光学系统证明了光线矩阵元表达的衍射积分是旁轴波动方程的准确解。
It is proved in a complicated optical system that the diffraction integration in terms of ray matrix element is the right solution 'for paraxial equation.
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