仰角

The main objective of the present study is to find the dynamic characteristics of a tower crane under various loadings and operating angles.

本研究主要探讨塔式起重机的吊臂在不同操作仰角，配合上不同的吊重所产生的动态特性，及潜在危险。

Results show that using bin to bin automatic gain control,clutter filtering,and suitable antenna tilt management,the " wet " microburst windshear can be accurately detected 80s(approximately 6km) in front of the aircraft,meeting the certification requirements proposed by FAA.

结果表明：通过单元－单元自动增益控制、杂波滤波和天线仰角控制，可提前80s（6km）探测到&湿&微下击暴流风切变，符合FAA提出的适航要求

And return as an echo shows the distance of the target, at 12.4 millionths of a second for each mile of range.

以确认其距离，每英里需时1.24*10-6 S，目标的仰角可被用以确认其高度。

In order to make the process of rain increasing by roct more precise and more efficient by means of determining the objective according to data,it is advisab e to link TWR01 radar,714CD radar truck-mounted type WR-1B rocket launch work spot and the work control center by applying synthetically computer network optical fiber GPS wireless communication techology,and to form a rain increasing work direction system,which can enhance scientific levels of the direction and the spot work in rain increasing.

为了细化火箭增雨作业过程，依据数据确定目标有效实施增雨作业，通过综合运用计算机网络光纤GPS无线通信技术链接TWR01雷达、714CD雷达车载式WR—1B火箭发射作业点、作业指挥中心，形成增雨指挥作业系统，提高了人工增雨科学指挥、科学作业水平。TWR01雷达计算机系统自动解算出火箭发射装置的作业参数，GPS确定火箭作业地点，增强了火箭发射地点、方位、仰角、高度、行程等作业数据的准确性和科学性。

The results showed that the temperature of main parts of ship was different in a day, and it was also different among these parts at the same time. The radiant intensity was different around the ship at different time, and it was also different at the same time with different azimuth angle, and it increased with the increase in elevation angle.

模拟结果表明舰船的主要部位的表面温度在一天之中变化显著，且在同一时刻部位间的温度也存在明显差异；舰船不同时刻的辐射强度沿周向差异显著，同一时刻不同方位角上的辐射强度存在一定差异，同一时刻同一方位角上的辐射强度随仰角的增大而增大。

To overcome the drawbacks in the weight and cost of the antenna with the corrugated soft surface, a new patch antenna with patch rings is designed. Its weight is about 1/4 less than the antenna with the corrugated soft surface and it is inexpensive. Good experimental results are obtained. The radiation pattern of the antenna is more rotationally symmetric, and a more reduction on the sidelobe levels of the antenna is achieved as compared to the antenna with the corrugated soft surface. In conclusion, in the present thesis both theoretical and experimental research works have been carried out intensively on patch antennas based on photonic-bandgap structures.

为了克服皱褶软表面天线份量重，加工费用贵等缺点，我们对空气介质的皱褶圆环结构软表面天线进行了改进，将周期分布的皱褶圆环平面化，并保持结构的软表面特性，设计出了一种新的平面圆环结构的软表面天线并进行了实验研究，加工的平面圆环结构天线比皱褶圆环结构天线重量减轻了约1/4，加工费用大大降低，所取得的实验结果显示，该平面圆环结构软表面天线的方向图的轴对称性得到了改善，在俯仰角从0°～-90°的范围内天线H面的波束与E面重合，与皱褶圆环结构相比，天线的旁瓣和背瓣受到了更大的抑制，E面方向图上+120°方向的旁瓣被明显削弱。

The results show that the variation in elevation angle of roof beam can be controlled by the equilibrium jack in moving support and the stress at different parts can be adjusted according to the variation of the support load in coal caving process, greatly improving the adaptability of the 2-leg shield support in top-coal caving working face.

分析结果表明，通过平衡千斤顶可以控制移架过程中顶梁仰角的变化，并可调节支架各部位受力以适应放煤过程中顶梁外载的变化，从而提高了两柱式支架对放顶煤工作面围岩活动规律的适应性。研究结果对于现场操作及新架型的改进都有一定的指导作用。

Anti-torque and yaw control is provided by conventional cockpit pedals connected to the tail rotor pitch control mechanism with steel cables through a quick-disconnect installation.

直升机亦可加装可在空中做调整的整体仰角及油门节流阀控制的装置。

This paper includes three parts:The first one is the comparison of VCP11 and VCP21 Recommending the Radar base data structures and reading 11 layers datas of the same elevation or so, establishing VCP22 patterns. Through the comparison of the products of two VCPs, stressing these factors, including the detecting of strong convection storm and the obvious effect products of prediction, such as ET CR VWP, RCS WER VIL SWP, etc.

本文包括3个部分：第一，新一代天气雷达两种体扫模式VCP11和VCP21的比较介绍了两种模式VCP11和VCP21基数据的数据结构，从其结构着手，读取VCP11中与VCP21模式仰角相同或者相差不大的共11层的数据，建立了VCP22模式，再由VCP11及VCP22模式的基数据生成的产品进行对比研究，重点比较了对强对流风暴探测和预报起较大影响的产品如回波顶高，VAD风廓线，垂直液态水含量，反射率垂直剖面，冰雹指数，组合反射率，弱回波区等。

A GPS Doppler model was constructed by using geometric scalar analytic approach, considering the fact that observer is not necessarily on the ground trace of the satellite. In addition to the modeling and computation of orbital angular velocity, visible window of satellite, and the maximum elevation earth-centered angle, Doppler's characterization with regard to the observing time was deduced and analyzed.

采用几何标量分析方法，建立了地心地固坐标系中GPS信号多普勒频移分析模型，计算了卫星可见地心角、卫星轨道角速度和卫星可见区间，推导并分析了多普勒频移关于接收机最大可见仰角、卫星轨道角速度和卫星可见时刻开始所经历的时间等参数的变化规律。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。