旁轴的

Paraxial approximation absorption boundary condition based on acoustic wave equation can obtain better absorption results by increasing paraxial approximation order of Taylor series. However, this kind of operation will increase the complexity of difference computation, and result in instability of computation process.

基于声波波动方程的旁轴近似吸收边界条件可以通过提高泰勒级数展开的旁轴近似阶数获得更好的吸收效果，但这样不仅增加了差分计算的复杂性，同时还导致计算过程不稳定。

The hyperbolic and parabolic travel time of the reflection in layer media are presented in expression of matrix with paraxial ray theory.

利用旁轴射线理论给出了层状介质反射波的双曲线旅行时和抛物线旅行时的矩阵表达式。

The derivation of the relationship between the paraxial wave equation and the complex source points is given and proved.

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。

Comparing with common side hybrid laser-arc welding, coaxially combined laser beam and arc can provide a symmetrical circular thermal source on the workpiece surface, which is convenient for 3-D welding.

与目前常用的旁轴激光-电弧复合焊相比，激光-电弧同轴复合可以在工件表面提供对称热源，焊接质量不受焊接方向影响而适于三维焊接。

The invention relates to a paraxonic powder-feeding device based on the laser powder filling weld and relative power-feeding method, belonging to the laser material manufacture technique.

本发明涉及一种基于激光粉末填充焊接的旁轴送粉装置及送粉方法，属于激光材料加工技术领域。

The inventive powder-feeding device and method can effectively and easily process the paraxonic powder-feeding laser powder filling weld on the round and arc track of machined surface.

本发明的送粉装置和方法，可以有效、方便地对加工平面上为圆形、圆弧形轨迹进行旁轴送粉方式激光粉末填充焊接。

Before the M8 review I had no experience of rangefinder photography, something I considered relegated to history.

之前为M8做评测，我并没有旁轴的摄影经验，是我认为它已成为历史。

I will devote the first part of this review to considering the Contax G2 AF rangefinder system on its own merits.

我将首先实事求是是回顾一下Contax G2自动旁轴照相机系统的特点。

I will devote the first part of this review to considering the Contax G2 AF rangefinder system on its own merits.

我将首先实事求是地回顾一下Contax G2自动旁轴系统的特点。

Additionally, some people feel more connected to a subject when looking through a rangefinder than through a viewfinder.

此外，一些人觉得通过旁轴取景比通过单反相机的取景器要更加贴近被摄对象。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。