查询词典 beam

It will result in birefringent phenomenon of the light beam,based on which many of the current optical voltage transformers are studied.

某些晶体在电场作用下，折射率发生变化，当光通过时会发生双折射现象，现在研究的光学电压互感器多是基于此种现象的。

The officers moved from the midsection through the bomb bay, walking on a narrow steel beam with the 500- or 1,000- pound bombs hanging down on either side. The cockpit in a B-17 was above and immediately ahead of the bomb bay.

军官从位于机身中部炸弹舱，穿过狭窄的，两边悬挂着500磅或1000磅炸弹的钢梁通道。B-17型轰炸机驾驶座舱几乎就在炸弹舱正上方。

According to the theory of first-order Born approximation,a Fourier Domain Optical Coherence Tomography model of single scattering infinite narrow beam is established,and the reason why it is hard to obtain the exact solution of integrated scattering equation is analyzed.

选择多层介质作为样品，根据波恩一阶近似理论建立了单次散射的无限细直光束频域OCT模型，并分析了散射积分方程很难得到精确解的原因。

In a later Boulton and Watt engine, dating from 1788, the up and down motion of the beam was converted into a rotary motion .

1788年，瓦特和波尔顿将上下移动的吊杆改装成旋转式的。

For those, this thesis constructions the Hermite B-spline bases scale functions with boundary conditions on the interval. Combining with Garlerkin method, the steps are given to solve differential equation, as an example, it is used to deal with finite-length beam and plate problems.

鉴于以上的原因，本文构造了满足区间上边界条件的Hermite B－样条尺度函数基，提出Galerkin法求解格式，并应用于弹性地基上有限长梁和板问题，给出了数值结果。

Fully regarded the piezoelectric effect, the electrooptic effect caused by the applied electric field and based on the equation of diffraction efficiency and Bragg condition, the of between the applied electric field, the writing beam ratio with respect to the writing angles are analyzed.

全面考虑了电场作用下晶体的压电和电光效应，基于衍射效率公式和光栅的布拉格条件，给出了为获得最佳衍射效率比时外加电场及写入光束比与记录角度间的关系曲线。

The elementary principle of the method is to get out acoustic information from acoustic solid medium firstly through Bragg diffraction ,and then to measure the difference of deflection angular from reference beam of light.

该方法的核心是通过声光布喇格作用，把SAW陀螺效应引起的声速变化信息寄载到布喇格衍射光中，通过检测布喇格衍射角度推算出固体介质的旋转角速度。

A rigorous coupled wave theory for the Bragg diffraction of a Gaussian beam in the uniaxial crystal is derived and a group of rigorous coupled wave equations and diffraction efficiency formula are obtained in terms of the proper coordinate transformation and Riemann method .

利用适当的坐标变换和黎曼方法建立了高斯光束在单轴晶体中布拉格衍射的严格的耦合波理论，获得了一组严格的耦合波方程和衍射效率计算公式，讨论了衍射效率随折射率调制量的关系以及波长选择性和角度选择性，同时分析了衍射效率对再现光宽度的要求。

Adjust the brake band equalizer beam properly.

适当调整刹带平衡梁 aW w'vv

From now on, Ma steel's H beam has become the leader brand in China.

为优化我国钢铁产品的结构和促进相关产业结构的升级换代发展提供了一个范例。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。