光束

The angular extent in a specified plane which contains all the radius vectors of the polar curve of luminous intensity having lengths greater than a specified fraction of the maximum.

在某一平面上，一定角宽范围内所包含的光强极轴曲线上的矢径长度均大于其最大值的某一特定比例，这种情况定义为光束的发散。

The measurement technique of HCN laser interferometer/polarimeter is based on the optical beam interference principle and Faraday rotation effect induced from poloidal field.

HCN激光干涉/偏振测量仪的测量原理是基于光束的干涉和电磁波与磁场的法拉弟旋转效应。

The power transmittance of the two pencils of ray from the polariscope changes with the different angle of incidence .

偏光分束棱镜两出射光束的光强透射比会随入射角的改变而发生变化，为了弄清变化情况，我们利用微机绘制了偏光分束棱镜光强透射比随入射角变化的曲线，并进行了分析，得出了结论。

Since optical nonlinearity is caused by electronic polarizability of materials on exposure to intense light beams, electronic polarizability is one of the most important properties that govern the nonlinear response of the materials.

由于非线性光学性质，是造成电子极化材料，暴露于激烈的光束，电子极化是其中最重要的物业管非线性响应的材料。

A plastic film that can polarize a beam of light; often used in sunglasses to eliminate glare.

可以使光束偏振的一种塑料薄膜；使用时通常戴着太阳镜来挡住耀眼的光。

Effects of the polarizer is effectively ruled out and filter out the scattering of light beam.

偏光镜的特效就是有效地排除和滤除光束中的散射光线。

The light propagation characteristics and light spot converter principles inside a cone are studied based on the principle of total reflection of light.

提出了一种圆周型光斑模式转换器——透明玻璃圆锥体，根据光的全反射原理论证了光在该圆锥体中的传输规律和对光束光斑模式的转换原理。

Rather, it is a way of projecting beams of light wherever they are needed.

其实，全息投影是指一种将光束投影到任何需要的地方的方法。

In this paper we study the propagation of the single cycle or much shorter pulsed-beam in free space.

研究了单周期或更短的超短脉冲光束在真空中的传输。

In section 3, a new algorithm is given to simulate the propagation of focused beam.

第三节阐述了在模拟计算聚焦光束时所给出的新算法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。