查询词典 off the beam

As walk-off angle and acceptance angle of beam limit the conversion efficiency and the tunable wavelength range of difference frequency generation, research include effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and the impact of crystals length on the process of frequency conversion.

由于光束的走离角、允许角限制了转换效率和差频调谐波长范围，研究内容还涉及了有效非线性系数、走离角和允许角与波长的关系，转换效率与允许角的关系，以及晶体长度在频率变换过程中产生的影响。

The laser beam emitted by the laser is expanded to the cutting width required by the tipping paper via the laser beam expanding system, the expanded laser beam passes through the cylindrical surface focusing mirror and 4 focuses on the focal plane form a focal line and the tipping paper is cut off by the focal line on the focal plane.

由激光器发出的激光束经激光扩束系统将激光束扩大至水松纸所需的切割宽度，经扩束后的激光束通过柱面聚焦镜，在焦平面4聚焦形成一条聚焦线，水松纸在焦平面上被此条激光聚焦线割断。

Use arm lubricating gun to inject grease to the lubricating position of beam pumper with large work intension and long well off, which effects oil production efficiency seriously, is easy to well recline for sandy well and causes waste .

中文摘要：使用压杆式黄油枪把润滑脂注入到游梁式抽油机润滑部位，工人劳动强度大，停井时间过长，严重影响了采油时率，对于易出砂井，还容易躺井，造成了作业费用的浪费。

In this dissertation, the differences between Heavy Wide Loom and ordinary loom in welt insertion, warp, abb, warp beam, heddle, speed and battening are pointed out. The development situation of Heavy Wide Loom is analyzed. The organization of Heavy Wide Loom and function of let-off system are discussed. The composition of let-off system is completely studied, which includes the detect system of warp tension, the control system of electron let-off and the drive system of beam.

本文首先指明重型宽幅织机与普通织机在引纬、经线和纬线、经轴、综片、转速、打纬等方面的区别，分析国内重型宽幅织机的发展现状，讨论了重型宽幅织机的构造和送经系统的功能，对送经系统的组成部分：经线张力感测系统、电子送经的控制系统、经轴的驱动系统进行分析与研究。

With reasonable analysis of optical path, a new type beam expander with wide aperture and bigger field angle and large relative aperture in which the on-axis and off-axis aberration are both perfectly corrected is designed.

通过合理的光路分析，设计出一种轴上和轴外像差都得到很好校正、大口径大相对孔径、视场可增大的、光学性能优于伽里略和开卜勒扩束器的新型扩束器。

By analyzing the optical characteristic of the off-axis and multi-pass amplified high power solid-state laser facility,using the theory of binary tree tracing and matrix optics,and dividing the system into four parts that include cavity amplification part,boost amplification part,beam reverser and beam output part,the ghost image are analyzed and traced.Main of ghost image that are devastating are given in all parts.

为了有效地避免鬼像破坏，针对采用离轴多程放大的高功率固体激光实验装置的光路特点，利用"光路二叉树"原理和"矩阵光学"方法，将全光路"单元化"为主放大、助推放大、反转器和输出4个部分进行光线追迹和鬼像分析，给出了各个部分的主要鬼像分布。

Bearing warp beam foot,can assure the volume of let-off equality.

轴承式经轴托脚，保证送经量的均匀。

The stepping-motor-driven warp let-off unit is applied to 1515-PJR flexible rapier loom. The warp tension is measured by using IBM-PC and CRAS software package. A new measuring index of warp tension for comparing the performance of warp let-off motion is given. The statistical analysis on the warp tension in the weaving process from full warp beam to empty is conducted. Also, the spectrum of the dynamic warp tension is analyzed, and the influences of the warp let-off motion' timing on warp tension are discussed.

本文研制的步进电机驱动送经装置在1515-PJR挠性剑杆织机上进行了实际织造运行，用IBM-PC微机和CRAS软件包对经纱张力进行了现场测试，提出了一项新的衡量送经装置性能好坏的经纱张力测量指标，对从满织轴到空轴织造过程中的经纱张力水平进行了统计分析，对经纱动态张力信号进行了频谱分析，并研究了送经运动的时间安排对经纱张力的影响。

All optical switches use the third-order optical nonlinearity of materials, whose work principle can be described as follows. One laser beam inducing the change of refractive index of materials, signal beam transmitted in mate rials will produce accessional phase change to realizing the "On" or "Off" ofoptical switches.

全光开关的工作原理利用了材料的三阶非线性光学特性，用一束光引起材料的折射率发生变化，信号光在其中通过时就会带来相位的变化，从而实现光开关的开关动作。

It is now possible to use a tractor beam on a gangmate's can if the gangmate docks. However, you may not be able to use the tractor beam if the gangmate leaves the system, logs off, or if the gang disbands.

现在牵引光束可以在当这个团队成员停靠的时候使用在他/他的货柜舱上，但如果他离开这个星系了或者下线或者团队解散了则不再可用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。