查询词典 beam-focusing

Ii an alteration of course towards a vessel a beam or abaft the beam .

除对被追越船外，对正横前的船舶采取向左转向

When avoiding action consists of an alteration of course, so far as possible, do not alter the course to port for a vessel forward of the beam, other than for a vessel being overtaken, or do not alter the course towards a vessel abeam or abaft the beam.

通过改变航向方法避让应尽可能早进行，在船头交汇时不可向左侧打舵。

The presented concept of "beam-distance acoustic image" and "beam-depth acoustic image" provide torpedo near field control and guide characteristics.

提出目标近场波束-深度和波束-距离二维声图象的概念，为鱼雷末制导阶段提供了目标近场回声二维特征。

YM-tensioned anchor client 1, YM strand tensioned anchor client system includes: YM15 anchor (for §15.2,§15.7mm strand) YM13 anchor (for §12.7,§12.9mm Steel Stranded) BM15, BM13-type flat anchor YMZ15, YMZ13-ring anchors (applied to the structure of cyclic stress) 2, YML Series connectors include: single as used prestressing tendon lengthening, usually with in pre-tensioned law; porous as the next long prestressed beam, normally used in the continuous beam. 3, P-type anchorage system for P-type anchorage system includes extrusion anchor (from compression set and a triangle composed of copper wire extrusion spring), anchor anchor plate, spiral reinforcement, constraint circle bellows.

YM张拉端锚具1、YM钢绞线张拉端锚固体系包括：YM15锚具（适用于ф15.2、ф15.7mm钢绞线）YM13锚具（适用于ф12.7、ф12.9mm钢绞线）BM15、BM13型扁锚YMZ15 、YMZ13 型环锚2、YML型系列连接器包括：单孔作为接长预应力筋用，通常用于先张法中；多孔作为接长预应力束，通常用于连续梁中。3、P型锚固体系P型锚固体系包括挤压锚具（由挤压套和三角形铜丝挤压簧组成）、锚固锚板、螺旋筋、约束圈、波纹管。

The foundation frame is made of channel beam and angle iron welding, the basic dimension demand of the frame refer to figure 5/6,Channel beam's high isn't strict demand, may use 5 or

基础框架是由槽钢及角钢焊接组成的框架结构，框架的基本尺寸要求见图5/6，对槽钢的高度无硬性要求，可以选用5号或

When the angle radius of the diffraction spot's the first dark ring is big, the effect is relatively small. But when the angle radius is small, especially for turbulent effects being weak, the effect on the beam spreading is very distinct, and the magnitude of the beam spreading is mainly dependent on the jitter item of the scaling relations.

由此定标关系可知，当系统衍射角σ0较大时，跟踪抖动对光束扩展的影响比较小；但是当系统衍射角σ0较小时，特别是在湍流效应较弱的情况下，抖动的影响非常显著，此时光束扩展主要是由系统抖动项所决定的。

the conditions of acquisition of minimum deviation is proved by means of rolle's theorem and the reversibility principle of beam path for triple prism, it is that the angle of incidence is equal to the angle of emergence for monochromatic incident beam.

利用数学中的罗尔中值定理及光路的可逆性原理证明了三棱镜获得最小偏向角的条件，即单色光线的入射角等于出射角。

The results show, when the prism wedge angle is 4°, the transmitted laser beam changes about 1 μrad as the prism rotates 1′; when the small angle deviation on one side of the minimum deviation angle of each prism is controlled, the scanning range of laser beam in the horizontal and vertical direction is not less than 500 μrad, and the scanning precision of the device is superior to 0.2 μrad.

结果表明：取棱镜棱角α为4°时，棱镜每旋转1′，透射光束变化约1 μrad；分别控制双棱镜在其最小偏向角一侧小角度偏转，可以实现光束在水平方向和垂直方向500 μrad范围内的精确扫描，装置的扫描精度可以达到0.2 μrad。

Results show that when the intensity of the self-pumping beam is increased from 70 to 300 W/μm, the refraction angle of the beam can be tuned about 10 degree.

结果发现，当光强变化230 W/μm时，两束光在空间上能被分开10°，选取较大的基本功率将有助于提高其光强分辨率。

In this paper, we investigate the light intensity-dependent superprism phenomenon in the two-dimensional Kerr nonlinear photonic crystal by nonlinear finite-difference time-domain technique. We show that when the intensity of the self-pumping beam is increased from 70 to 300 W/μm , the refraction angle of the beam can be tuned about 10 degree.

基于非线性时域有限差分法，我们模拟了克尔非线性光子晶体中的光敏超棱镜现象，结果发现，当光强变化230W/μm时，两束光在空间上能被分开10o，选取较大的基本功率将有助于提高其光强分辨率，。

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％。