查询词典 double angle formulas

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 relationship between acoustic wave direction,laser incident angle,and laser diffraction angle of TeO2 acousto-optical deflector with acoustic frequency was analyzed based on the TeO2 crystal acousto-optical characteristic and Dixon equations under abnormal Bragg diffraction.

根据晶体的声光特性以及反常布喇格衍射的Dixon方程，得出了氧化碲声光偏转器在反常布拉格衍射条件下的参量矢量关系。分析了超声波方向、入射光角度、衍射光角度与声波频率之间的关系。

One limb dips to the north with a dip angle of 46 degrees and the other limb dips to the south with a dip angle of 48 degrees.

其中一个翼倾向北，倾角46度，另一个翼倾向南，倾角48度。

One limb dip s to the north with a dip angle of 46 degrees and the other limb dip s to the south with a dip angle of 48 degrees.

其中一个翼倾向北，倾角46度，另一个翼倾向南，倾角48度。

This paper introduces the developing conditions of big dip angle belt conveyor in our country,generalizing the five kinds of main type and their principal uses of big dip angle belt conveyor.

介绍国内外大倾角带式输送机的研制状况，概述大倾角输送机的5种主要类型及其用途。

Under the influence of angle of joint and load, the distributing of displace field exits non-uniformity, and with the increase of joint dip angle the non-uniformity become stronger.

6受节理和加荷方向的影响，位移场分布存在一定的不均匀性，随着节理倾角变大，不均匀性增强。

The design method is described, and the calculation results are presented under the standard air conditioning condition. The working process of the two-stage expander is discussed, and the difference between the two-stage expander and the conventional one is stated. In addition, the influence of the dip angle on the expansion chamber volume is analyzed. The results show that the dip angle has little effect on the expansion chamber volume and it is suggested that the effect may be neglected in the expander design.

介绍了该膨胀机的设计方法，给出了标准空调工况下的计算结果，详细讨论了两级旋叶式膨胀机的工作过程，并对两级膨胀机与传统旋叶式膨胀机的区别进行了论述，最后分析了滑片倾角对工作腔基元容积的影响，结果显示，滑片倾角对工作腔基元容积的影响很小，在膨胀机的设计过程中忽略滑片倾角的影响是合理可行的。

Research shows that the main factors influencing forging penetration efficiency are reduction in pass and the dip angle of the hammer, and the main factors influencing forged piece surface quality are axle feeding speed and rotation angle.

研究表明：影响锻透性的主要因素为道次压入量和锤头倾角；影响锻件表面质量的主要因素为轴向送进速度和旋转角度。

It can meet the requirements for many types of typical layout, such as 500-1400mm belt w idth, dip angle of 0°-18°, and surrounding angle of 190°-210°.

可满足带宽500～1400mm 、倾角0°～18°、围包角190°～210°多种型式的典型布置。

Many phenomenon due to deep dip angle coal seam mining are still explained very well. There are a lot of deep dip angle coal seam mining district in China, the problem of miming subsidence is very general, so the research is of theory mining and practical value.

实践中，我国很多矿区有大量的倾斜煤层存在，倾斜煤层开采沉陷与变形预计问题普遍存在，需要我们对这类矿山的地表移动规律问题进行全面研究，因而该项研究具有重要的理论意义和生产实用价值。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"