查询词典 thread angle

Fish eye lens is a kind of reversed telephoto lens having big relative aperture, large view angle and long back working length. Its view angle can reach 180 degree or even more so it can image object covering semisphere or larger than semisphere to limited plane.

鱼眼镜头是一种具有大相对孔径、大视场角和较长的后工作距离的反摄远镜头，它的视场角可以达到甚至超过180°，因此它能够将半球空域甚至超半球空域的物体成象在有限的象平面上。

Especially explain the mechanism about fleet angle and contact angle on sheave influencing fatigue dura- tion of steel wire rope.

特别是对偏角和包角影响钢丝绳疲劳寿命的机理作出解释。

The national defence basic project as background and the dynamic model of cotrolled transfer matrix for multiple launch rocket was created in order to reduce the initial disturbance of rocket projectile. The causes that affect the angle change of orientation locator were analyzed by the engineering system dynamic theory base on multibody system transfer matrix method. The simulation of dispersion for multiple launch rocket was implementation, and the affect law between the angle of elevation and side deflection and the control parameters was acquired. The control module was installed on the orientation locator of multiple rocket launcher to control the initial disturbance of rocket that provide new method and theory base and show the engineering system dynamic base on the multibody system transfer matrix method is effective.

本文以国防基础科研项目为背景，建立了通过控制定向器角运动来减小火箭弹起始扰动的多管火箭受控多体系统动力学模型，应用基于多体系统传递矩阵法的工程系统动力学理论，进行了定向器角度运动的影响因素分析，进行了受控多管火箭炮发射动力学和密集度数值仿真，得到了定向器俯仰和侧偏角控制参数对俯仰角和侧偏角的影响规律，为在火箭炮定向器上加装控制集成模块控制火箭弹的起始扰动和射击精度提供了新思路和理论基础，也表明了基于多体系统传递矩阵法的工程系统动力学理论的有效性。

This paper introduces two methods to get the virtual sensor signal of angle of attack and sideslip angle: Nonlinear Observer method and INS/GPS method.

本文介绍了两种方法来得到迎角和侧滑角的虚拟传感器信号：非线性观测器方法和利用INS／GPS系统数据估计迎角和侧滑角方法。

The angle at the vertex P of triangle O1PQ1 is equal to the angle at the vertex P of triangle O2PQ2, so these two right triangles are similar.

三角形O1PQ1中顶点P的角度等于三角形O2PQ2中顶点P的角度，因此这两个直角三角形是相似的。

The results of wheelchair skew angle and position shown the cooking position of wheelchair user is different from that of normal people. The skew angle between wheelchair and bench in both preparing and cooking areas are less then 20 degrees.

受测者於面对一字型厨台工作时椅与瓦斯的夹角，多是小於二十；因为实验台之下方为空心，已避免对椅移动造成的阻碍，此结果应与瓦斯的工作性质有关。

The measurement accuracy of the photoelectric theodolite is decided based on measurement requirement of the ballistic trajectory. Two simple equations were derived mathematically, one expression for positioning error of the ballistic trajectory, angle error of the photoelectric theodolite, ranging error, target slant range and height when one instrument is used, another expression for positioning error of the ballistic trajectory, angel error of the photoelectric theodolite, target slant range and intersection angle when two symmetrical intersection instruments are used.

通过数学解析的方法，推导建立了2个简洁的公式：1）单站定位体制下弹道点位精度和光电经纬仪测角、测距精度以及目标斜距、高角之间的数学表达式；2）对称交会测量体制下弹道点位精度和光电经纬仪测角精度以及目标斜距、交会角之间的数学表达式。

When parallel laser beam is irradiating the bubble in the prism, circular interference fringe is produced in the far-field. Based on the far-field theoretical model, the angle position of interference fringes outside the prism is measured with spectrometer and converted into the angle position of interference fringes inside the prism according to Snell's law and then bubble diameter is calculated with computing software Mathematica, the relative difference of which is 0.2%.

平行激光束照射到棱镜中的气泡时，在远场将产生圆环状干涉条纹，利用气泡远场干涉理论模型，使用分光仪对三棱镜外干涉条纹角位置进行测量，由折射定律换算为棱镜内干涉条纹角位置，进而使用计算软件mathematica计算出气泡直径，其相对差为0.2%。

Brightness of aware sort is the classification norm of distance classification. Distance classification compares brightness between aware sort and unknown pixels. Angle of spectral line is the classification norm of degree classification. Degree classification compares angle of spectral line between aware sort and unknown pixels.

距离分类器是以已知地物类别的亮度值作为分类基准，通过比较未知类别像元与已知类别像元亮度值间的距离进行分类；角度分类器是以光谱谱线角为分类基准，通过比较n维波段空间中未知类别像元与已知类别像元光谱角度进行分类。

Ah specifically, the angle of the sphere and the relationship side of spherical geometry, spherical trigonometry is a part, mainly in the processing, discovery and interpretation of polygons on the spherical surface contact angle and the edge and relevance.

具体一点啊研究球面上的角与边的关系球面三角学是球面几何学的一部分，主要在处理、发现和解释多边形在球面上的角与边的联系和关联。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。