查询词典 thread angle

The relation between the ultrasonic frequency f and the wavelength λ0 was deduced. The relations between the diffraction angle θd,the acoustic polar angle θa and the incident angle θi were calculated.

推导出超声波频率f和光波波长λ0的调谐关系；计算出滤波器的光谱分辨率R和集光能力δθi；光入射角θi与衍射角θd、声入射角θa之间的关系。

The emulation result shows that the error of polarizer rotation angle almost does not influence nonlinearity when elliptic polarization of laser beams exists; when the error of rotation angle of polarizing beam splitter exists, the second-harmonic nonlinearity caused by the error of polarizer rotation angle will not increase, but the first-harmonic nonlinearity will increase greatly.

仿真结果表明，当存在激光束椭圆偏振时，检偏器旋转误差对非线性误差的影响很小；当存在偏振分光镜旋转误差时，检偏器旋转误差引起的非线性误差不增加二次谐波分量，但增大了非线性误差一次谐波分量，严重影响非线性误差的大小，当偏振分光镜旋转误差为3°时，检偏器旋转误差从0°增加到5°，非线性误差从0.14 nm增大到0.97 nm。

The effect of Reynolds number on rudder hydrodynamic performance is also analyzed. Up to the stall angle the computed lift and drag agree well with measurements and other author's calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under-predicted. The solver is used to investigate laminar and turbulent separated flows around a 6: 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces. The second separation flows are successfully identified in both laminar and turbulent flow simulations.

应用所开发的求解器，以6：1长椭球体为算例计算了回转体在大攻角下定常斜航运动时的三维粘性流场及水动力，对层流流动和湍流流动分别进行了计算，分析了层流与湍流分离流动和涡旋产生的特点及其对水动力的影响；计算结果与他人的试验和计算数据比较，吻合程度良好，表明应用本求解器能够正确模拟这种以层流／湍流分离流为主的复杂粘性流动，得到相当精确的水动力，检验和验证了该求解器精确模拟回转体在大攻角下的粘性分离流动和计算水动力的能力。

Judging on the radioactive rays whether they penetrated through the truncated right angle cone shield configuration. A hypothetical circumscribed rectangular parallelepiped of the they penetrated through the truncated right angle cone shield configuration. A hypothetical circumscribed rectangular parallelepiped of the truncated right angle cone shield configuration is also presented. The methods simplified the camber equation and reduced the calculation time significantly.

在判断放射线是否穿透此圆锥台体时，又提出了圆锥台形屏蔽体的假想外接长方体的建模方法，将曲面方程联立解的复杂计算简化为一次代数方程的简单计算，大幅度地缩短了计算时间。

An angle that is not a right angle or a multiple of a right angle.

一个不是直角也不是直角的倍数的。

At last, the muzzle sinkage of rocket mechanics and effect are researched, and thechanging rule of the pitch angle, yaw angle, slope angel and offset angle are analysed. Whichis very necessary to simulation analysis on warhead sinkage.

最后，研究了炮口下沉的机理及影响，并对其进行了动力学仿真分析，得到了在不同射角情况下，火箭弹的俯仰、偏航、弹道倾角及弹道偏角的变化规律，对提高弹箭武器的射击精度具有一定的参考价值。

By contrast with the spectral obtained under different incident geometry and polarized conditions, the experimental results show that the reflected light can be corrected completely with an incident zenith angle of 53 degree (Brewster's angle) and zero polarized angle.

结果表明，当探测角不满足布儒斯特角时，在偏振片的主消光方向能剥离绝大部分的水面反射光；当入射角越接近布儒斯特角，其剥离效果越佳；以布儒斯特角观测时，可以达到完全剥离的效果。

A right angle is an angle of 90°,and a straight angle is one of 180°.

直角是90°角，平角是180°角。

The article consists of three aspects: Chart One analyzes the meanings of synesthesia in the angle of its history;Chart Two deals with the value of synesthesia in the angle of the artists;Chart Three gets to the bottom of charm of synesthesia in the angle of the appreciators.

文章主要从三个方面来展开论述：第一章从通感的研究历史出发，分析了通感的理论内涵；第二章从艺术家角度出发，从创作活动中析出通感的价值所在；第三章从欣赏者角度出发，挖掘通感在这一环节的魅力所在。

Specifically, the viewing angle is divided into the level of visual angle and vertical viewing angle.

具体来说，可视角度分为水平可视角度和垂直可视角度。

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。