查询词典 constructive interference

In this system, the gratings are inscribed by the UV interference fringes of 248 nm derived from a rotatable biprism, where the phase mask is used as a beam splitter, and the biprism is rotated to change the intersection angle of two beams.

在该系统中，光纤光栅是由来自可旋转双棱镜所形成的波长为248 nm的紫外干涉条纹写入的，其中，相位掩模被用作1级衍射光的分束器，通过双棱镜的旋转可改变两写入光束的交叉角。

Two coherent laser beams derived from a single source intersect at a fixed angle. The intersection volume of the two beams is positioned on the sample surface. The wavefronts of the two beams interfere in the intersection volume and form an interference pattern.

来自同一激光源的两个相同的激光束以固定的角度交叉，两个光束的交叉部分定位在试样表面，两个激光束的波阵面影响交叉部分的大小，并形成一个干涉图。

According to the interference signal′s phase and light spot′s offset, the angular displacement is measured.

根据干涉信号的相位和光点偏移量可以计算出被测物体的角位移。

Analyses of the interference pattern for the photoelectronic angular distribution .

光电子的干涉效应及角分布状态分析。

On the basis of autocollimation principle,combining with grating interference principle, a new autocollimation interferometry method was put forward which can measure three-dimensional angular distortion.

以自准直原理基础，将光栅干涉原理引入，提出了一种能对船体三维变形测量的自准直干涉法。

Based on the relations of the diffraction field and the surface wave, which conclude diffraction factor and interference factor, some relations were conformed such as: the diffraction fringes spatial distribution versus surface wavelength, the fringes half angular width versus the numbers of surface wave covered by laser spots and incidence angle, diffraction intensity versus surface wave amplitude.

通过对衍射因子和干涉因子的分析，得到衍射条纹空间分布与表面波波长的关系、条纹的半角宽度与入射激光光斑覆盖表面波的个数和入射方向的关系、衍射光强度与表面波振幅的关系，并解释了条纹缺级现象。

Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.

最后讨论了对流层大气波导环境下电波异常传播特性的应用：结合具体的雷达系统参数，模拟计算了大气波导对雷达作用距离及发现概率的影响，对雷达系统的总体设计具有重要的参考价值；对表面大气波导环境下的卫星地球站通信协调区域进行了确定，从理论上很好地给出了协调距离量级的概念，为卫星地球站与地面微波站之间的协调提供了依据和参考；分析了利用海面蒸发波导来快速预测平流海雾的新方法，完善了平流海雾的预报方法，对海上安全作业和生产具有重要的意义。

ABSTRACT:Objective To explore the interference and effect of antenatal care on the increase of body mass index .

目的 探讨定期产检对孕妇体质指数增长的干预及对妊娠结局的影响。

It has to be small so that the electrical runs do not act like antennae and pick up the magical interference.

它必须很小，才能使电力装置不能起到天线的作用，接受不到魔法干扰。

The aim was to discuss the effect of fungicide interference on temporal and spatial niches of mango anthracnose.

［目的］探讨药剂干扰对芒果炭疽病时间和空间生态位的影响。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。