准点地

Among this technique, we use a simple, economical and practical collimation method-single lens collimation method to collimate semiconductor laser beam, and use moving objective scanning method to make laser point scan on the lofting plane.

其中用单透镜准直法对有大发散角的半导体激光光束成功地实现了准直，既简单又经济实用；用平移物镜法实现了激光点的扫描。

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

Firstly, this paper designs a polar coordinate barotropic vorticity equation semi-spectral model and a quasi-geostrophic grid model in order to research the propagation of vortex Rossby waves and tropical cyclone intensity change entirely.

本文首先设计了一个极坐标系正压涡度方程的半谱模式、一个准地转格点模式对涡旋Rossby波传播和热带气旋强度变化进行了较为系统的研究。

System computes combined navigation system of GPS/IMU, VECTOR and ascendable geometry stable platform, proceeds in space registration and time synchronization, calculates the systems accurate space, time, stance and course. Planar laser scanning data was filtered, registered space-wisely and time synchronously and fuse computered with other sensors data, extracted to 3D solid model of characteristic information of the road and outside of street, continuously extracted to point, line and plane, reconstructed combined with CCD camera data and visualized to 3D model true scene, finally implement acquisition and process of 3D space data timely, initiatively and integrally.

该套系统通过对GPS/IMU组合系统导航解算、VECTOR和升降几何平台进行空间配准、时间同步处理，计算出系统精确可靠的空间时间和姿态航向信息，二维激光扫描仪数据经过滤波去噪、和其他传感器数据融合、三维空间计算，解算出道路和两侧街景的三维空间数据模型，对空间激光数据模型提取点线面特征值，结合CCD相机数据进行立体重建和可视化，实现了实时、主动、完整地获取和处理三维空间数据信息。

System computes combined navigation system of GPS/IMU, VECTOR and ascendable geometry stable platform, proceeds in space registration and time synchronization, calculates the system??s accurate space, time, stance and course. Planar laser scanning data was filtered, registered space-wisely and time synchronously and fuse computered with other sensor??s data, extracted to 3D solid model of characteristic information of the road and outside of street, continuously extracted to point, line and plane, reconstructed combined with CCD camera data and visualized to 3D model true scene, finally implement acquisition and process of 3D space data timely, initiatively and integrally.

该套系统通过对GPS/IMU组合系统导航解算、VECTOR和升降几何平台进行空间配准、时间同步处理，计算出系统精确可靠的空间时间和姿态航向信息，二维激光扫描仪数据经过滤波去噪、和其他传感器数据融合、三维空间计算，解算出道路和两侧街景的三维空间数据模型，对空间激光数据模型提取点线面特征值，结合CCD相机数据进行立体重建和可视化，实现了实时、主动、完整地获取和处理三维空间数据信息。

On the high-speed railways, these are many neutral sections, chauffeurs are very exhaustion in manual mode.

在准高速、高速线路上，机车每小时要通过十几个分相点，频繁通过分相区时，手动操作不仅耗费司机精力，而且过多地分散了司机行车的注意力，对行车安全极为不利。

The design development of clothing famous brand with international popular trend for macroscopic background of, also is with expand a local market for main purpose, so the designer wants while developing famous brand Be understanding an international clothing market whole popular incline to of foundation up, need to be analyzed hard and study the concrete present condition of local clothing market, seek quasi- and international fad's melting between local clothing market and trend will order, being good at a choice, there is taking or rejecting ground to draw lessons from and make use of its related design main factor, make the design development of clothing famous brand is synchronous with international clothing and keep cultural special features and market of oneself to operate a mechanism namely.

服装名牌的设计开发是以国际流行趋势为宏观背景的，同时也是以拓展国内市场为主要目的的，因此设计师在开发名牌时要在了解国际服装市场整体流行趋向的基础上，需要认真分析和研究国内服装市场的具体现状，找准国际流行趋势与国内服装市场之间的融会点，善于有选择，有取舍地借鉴和运用其相关的设计要素，使服装名牌的设计开发即与国际服装同步又保持自身的文化特色和市场运作机制。

In this paper, a new method is presented to overcome this problem. By matching the 3D points reconstructed from the images and the known geometric model in space, the topology and curvature information of the model surface can be fully utilized and all the images to the 3D model stitched at the same time.

提出了一种新的配准方法来解决这一问题，由于采用了基于图像重建的采样点模型与已知几何模型在空间中匹配的方法实现配准，因而充分利用了物体几何形状本身的拓扑和曲率等信息，并可以一次性地实现所有图像与空间物体的配准。

If you want to make the country in such a way that autobahns could be constructed very quickly, or - as Mussolini used to claim, the trains should be run on time - if that's the only value, then I think there is a lot of merit in giving up democracy.

如果你想创造的国家，就是要很快地建一个高速公路，或者，就像墨索里尼说的那样，&火车应该准点运行&，如果这是惟一的价值，那么，我想，放弃民主，会有很多的优点。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。