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- It is well known that paraxial approximation and even scalar approximation are no longer valid for the beams with large divergence angles and small spot size comparable with the wavelength. 当光束具有较大的发散角或光束束腰可与波长相比拟时,傍轴近似,甚至标量衍射理论都不再成立。
- The far-field intensities and divergence angles of combined beam of two copper vapor lasers with UR90 resonators coupled at small magnification (M=1.21) were measured and analyzed experimentally. 并利用铜蒸气激光器实现了两台低放大倍率(M=1.;21)UR90腔的相干并束输出，对输出光束的远场方向性进行了测量分析。
- One line cuts another at right angles. 一条线与另一条线成直角相交。
- The angles of a triangle total 180. 三角形的三角之和等于180°。
- A polygon whose angles are equal. 等角多边形各角都相等的多边形
- A polygon with ten angles and ten sides. 十边形有十个角和十条边的多边形
- The Control of the Divergent Angle of He Ne Laser Beam 氦氖激光传播路径上发散角的控制
- A four-sided plane figure with four right angles. 矩形，长方形具有四个边的方形，有四个直角
- A plane figure with four sides and four angles. 四边形有四个边和四个角的平面图形
- At right angles to a vertical line. 横的与垂直线成90度角的
- The diameter of facula can be calculated by image process on computer, then we can get the value of divergence angle through formula. 在计算机中用图像处理方法求出光斑的大小，再计算发敞角。
- Divergent angles 发散角
- Intersecting at or forming right angles. 成直角的，垂直的交叉成直角的，或形成直角的
- BY using the Theory of Gauss Beam, this paper discusses on the problem of the divergence angle of the compressed semi-conductor laser, and makes the numerical analysis. 利用高斯光束理论对压缩半导体激光器发散角的问题进行了讨论,并且给出了数值分析。
- A divergent section of a river, especially near the mouth. 河流分支河流的分岔部分，特别是近河口地区
- Isolators with different ratio of length to height (L/H) and divergence angle were investigated and the influence of back pressure on location of the shock train was analyzed. 在来流马赫数2.;3条件下，通过改变不同的反压来研究反压对不同长高比等截面隔离段和带扩张角隔离段激波串起始位置的影响。
- The effects of swirl number of primary swirler and radial swirler,area ratio and sleeve divergence angle on the cold flow field of double swirl air intake were investigated. 试验研究了主、径向涡流器旋流数、面积比、套筒扩张角等参数对双旋流进气装置冷态流场的影响。
- It is well known that the paraxial approximation is no longer valid for the beams with large divergence angle and/or small spot size comparable with the wavelength. 当光束具有较大的发散角或光束束腰可与波长相比拟时,傍轴近似不再成立。
- A polygon having five sides and five interior angles. 五边形有五条边和五个内角的多边形
- He tried to attack the problem from different angles. 他试著从各个角度来著手解决这个问题。
