查询词典 double angle formulas

The precision of electronic angle gauge is 1Π 7 000 and the total error of Bitterlich angle gauge is 1Π 32. S o the precision of the electronic angle gauge is 200 times as high as general angle gauge and its velocity is higher.

经过分析，电子角规测树精度为1/7 000，而比特利希角规测树精度总误差达1/32，电子角规的测树精度比普通角规高出200倍以上，其速度也较快。

When measuring, based on the segmented contour line of thread, we used the compiled measurement program to calculate and measure the geometrical parameters of the internal taper thread as pitch, half of thread angle and taper angle. Precisions of pitch, half of thread angle and taper angle reached ±0.012mm,±0.17° and ±0.018°. The results satisfied with the technique requirement of production. The reason of error was analyzed.

在测量尺寸时，使用自编程序计算测量内螺纹的螺距、牙型半形及锥角，测量精度分别达到±0.012mm、±0.17°和±0.018°，满足产品的技术要求，并分析了误差产生的原因。

a system of along-track mode sar based on the gps is established.by seeing the gps signal as a chirp,chirp scaling algorithm of this mode with large squint angle is investigated.chirp scaling algorithm is considered more efficient and widely applicable when the bistatic sar system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by taylor expansion are so large that the algorithm could lose its precision.in such a case,an equivalent mono-static sar range mode which has fewer errors than taylor expansion with large squint angle is proposed to substitute the range history of bistatic sar.then bistatic sar images with large squint angles are gotten by common nonlinear cs algorithm.the effectivity of the method is verified by matlab simulation.

摘 要：建立了基于gps的顺轨sar系统模型，通过将gps信号等效为chirp信号，研究了在该模式下的大斜视角chirp scaling算法。在正侧视或小斜视情况下，cs算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性cs算法，实现了在大斜视角情况下的基于gps反射信号的双基地sar高精度成像，最后通过matlab仿真进行了验证。

At the peak point of backward swing, the vertical height from the center of the ball to the ground was 1.34 ±0.01 meters, the angle of the shoulder was 82 ± 2.5 degrees and the angle of the elbow was 161.35 degrees. During release, the vertical height was 0.13 ±0.01 meters, the angle of the shoulder was 48.00 ± 3.64 degrees and the angle of the elbow was 160.71 degrees.

所得具体结果如下：在后摆最高点时，球体中心点距地面之垂直高度平均为1.34 ±0.01公尺，肩关节角度为82 ± 2.5度，肘关节角度为161.35度；而在出手瞬间球体中心点距地面之垂直高度平均为0.13 ±0.01公尺，肩关节角度为48.00 ± 3.64度，肘关节角度为160.71度。

The theoretical and experimental investigations of discus flight indicate the following useful conclusions:the optimum combination of throw angle and discus inclination angle is 35°/26°at zero wind,while 45°is not the best release angle due to the aerodynamic force;different combinations of throw angle and inclination angl...

由于气动力的作用，45°并非铁饼的最佳投掷角度，实验和理论研究表明：无风时35°/26°的投掷角/倾角组合最佳；顺风和逆风投掷必须采用不同的投掷角/倾角组合才能获得当地条件下的最好成绩；铁饼出手时25r/s的自转速度已经可以满足稳定性的要求。

According to the functional requirements of adaptive front-lighting system, the relationships between the yaw angle and pitch angle of light axis in AFS and vehicle parameters, including speed, steering wheel angle and pitch angle of vehicle body are derived, thus a kinematics model for AFS is set up.

根据自适应前照灯系统的功能要求，推导了车辆参数（车速、转向盘转角和车身仰俯角）与车灯光轴沿水平和垂直两个方向的偏转角度之间的关系，建立了自适应前照灯系统的运动学模型。

Switch can be adjusted back up hand-held point of view (maximum 80 degrees) and leg drop angle (100 degrees);◆ foot bed lowest point from the ground 130mm, the highest point of the bed from the ground 680mm; also elevated bed of different heights;◆ bed in back with plexiglass plate, the user can seat on the bed for X-ray;◆ aluminum fence, can also choose to use push-pull PP flip rail or fence;◆ lift back, the waist angle of tilt, to prevent the sliding body;◆ by about 2 degrees of seat angle;◆ foot can be bent 100 degrees and can easily get out of bed from the bed and sat up and on;◆ foot horizontal position may rise higher than the height of 120mm;◆ with quiet casters with brakes and can be locked and lifted;◆ durability, operational quality, improved operating performance moving bed;◆ equipped with ABS headboard can be instantly demolished;◆ electric device of high quality fully enclosed permanent magnet DC control system;◆ low noise, high safety, long life;◆ new materials with polyester fiber mattresses;◆ can also choose to use low-rebound double-foam mattress or mattress waterproof material;◆ has good air permeability and durability.

可用手持开关任意调节背部上升角度（最大80度）和腿部下降角度（最大100 度）；◆脚部床面最低处离地面130mm，床面最高处离地面680mm；还可升高床面不同高度；◆床体背部采用有机玻璃板，使用者可以座在床上进行X光检查；◆采用铝合金护栏，还可选择采用PP翻动护栏或推拉式护栏；◆抬升背部时，腰部有一定角度的倾斜，为防止身体的滑动；◆采用了约2度的座角；◆足部可以100度弯曲，能够很方便从床上坐起和上下床；◆足部可上升高度比水平位置高120mm；◆采用静音带刹车的万向脚轮，并能进行锁定和解除；◆耐久性、操作性优良，提高了病床搬运的作业性能；◆配有ABS床头板可瞬间拆卸；◆电动装置采用优质永磁直流全封闭式控制系统；◆噪音低、安全性高、使用寿命长；◆配有聚脂纤维新材料床垫；◆还可选择采用低反弹的双层海绵床垫或防水材料床垫；◆具有良好的透气性和耐用性。

Calculation of teeth profile of disc cutter for arc-gear;2. The formulas for setting angle and entrance angle of disc cutter s are derived by using the contact condition of space curve.

利用空间曲线相切条件导出了用于计算盘形刀具安装角和切入角的条件；该方法具有以下优点：无需知道工件齿形，可同时获得刀具宽度、半径等参数。

Obtained the calculation formulas of stripe—pillar size of two and three dimension in the pillar containing joints by analysing it. Studied the effect of joint trace, angle, density and tension strength on the stability of stipe—pillar. Obtained the upper—limit value of joint angle that has no effect on the stability of stripe—pillar.

通过对含节理煤柱的分析，获得了含节理煤柱的二维、三维条带煤柱尺寸计算式，分析了节理迹长、倾角、密度、抗拉强度对条带煤柱稳定性的影响，获得了节理对条带煤柱稳定性无影响的节理倾角上限值。

To overcome the shortcomings of the traditional active decoying theory confronting an ARM(Anti-Radiation Missile),the monopulse angle is utilized tracking principles to deduce in the Cartesian coordinate system the bias angle formulas due to multiple sources.

针对反辐射导弹传统有源诱偏理论的不足，从单脉冲雷达跟踪合成波阵面法线方向的理论出发，对多个辐射源的诱偏公式在三维空间中作了推导，对多目标影响建立了较通用的干扰模型并分析得到该模型具有当只有一个干扰源时，诱偏方位角偏差跟目标干扰源方位角之差有关的特点，同时诱偏仰角偏差也有类似的特点。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。