波段

Remote sensing in ultraviolet and vacuum ultraviolet can help us recognize many spatial phenomenon, such as dayside and nightside airglow,aurora.

在自然界中有许多现象都反映在紫外-真空紫外波段，如太阳的紫外光谱反映着太阳的物理构成及其变化规律，地球的大气气辉和极光等也是太阳辐射和地球大气相互作用的表现，宇宙中的许多恒星，其温度都很高，辐射峰值多在紫外-真空紫外谱区。

The C-band magnetically insulated transmission line oscillator has teen simulated by the three dimensional PIC code in order to study the influence of non symmetry excitation mechanisms on its output modes. It is found that the non symmetry excitation mechanisms, such as random emitting of cathode electron anti the long rise tunic and low magnitude of input voltage, could product higher order modes and reduce output power.

为理解磁绝缘线振荡器实验中频频出现的模式竞争问题，利用3维全电磁粒子模拟程序对C波段MILO的实验模型进行研究，探索各种非对称激励机制对产生微波模式的影响，结果显示：阴极电子随机发射、电压的慢上升前沿、较低的电压等因素都可导致非对称高阶模式的产生，并使输出微波功率大大降低。

In this paper, firstly, the new combined error model of cumulative geoid height influenced by three error sources including the inter-satellite range-rate of K-band ranging system, orbital position of GPS receiver and non-conservative force of accelerometer from GRACE satellites is established using the semi-analytical method. Secondly, the dependability of error models is demonstrated based on matching relationship among the accuracy indexes of key payloads. Finally, the accuracy of global gravitational field up to degree and order 120 is effectively and rapidly estimated from GRACE Level 1B measured observation errors of the year 2006 publicized by the Jet Propulsion Laboratory in the USA, and the cumulative geoid height error is 18.368 cm at degree 120, which preferably accords with the Earth's gravitational field model EIGEN-GRACE02S provided by the GeoForschungsZentrum Potsdam in Germany.

首先基于半解析法建立了新的GRACE卫星K波段测量系统星间测速、GPS接收机轨道位置和加速度计非保守力误差联合影响累计大地水准面的误差模型；其次，基于各关键载荷精度指标的匹配关系，论证了误差模型的可靠性；最后，基于美国喷气动力实验室公布的2006年的GRACE Level 1B实测误差数据，有效和快速地估计了120阶全球重力场的精度，在120阶处累计大地水准面的精度为18.368 cm，其结果和德国地学研究中心公布的EIGEN-GRACE02S全球重力场模型符合较好。

Development of a space soft X-ray and EUV normal incidence telescope .

空间软X射线/极紫外波段正入射望远镜研究。

Our company specializes in manufacturing a full range of light-emitting diodes: white, red, orange, yellow, green, blue, purple and other pure-wide-band LED; a variety of normal and special-shaped, traffic lights, launch tubes, special big screen viewing angle, elliptical, color, etc. All the models of development and production of high-tech enterprises.

我公司专业生产全系列发光二极管：白、红、橙、黄、绿、蓝、纯紫等全波段 LED ；各种正常、异形、交通灯、发射管、显示屏专用大视角、椭圆、七彩等各种型号的开发和生产的高科技企业。

Time of flight mass spectra are abtained. The peaks at short wavelength side are relatively higher, the peaks at long wavelength are relativ ely broader and obscurer in the MPI spectrum.

得到了分子的飞行时间质谱，从整个实验波段430～490 nm的 MPI离子谱发现，短波的MPI离子谱峰相对较高，长波的MPI离子谱峰相对较宽而弥散。

From lunar occultation experiments at infrared wavelengths , it has been determined that the dust shell can be represented by two components

通过红外波段的月掩星观测，已经确定该尘埃壳是由两个成分原组成。

It was necessary to overexpose this positive record in order to enhance the presence of the Plankton bloom .

为了使大量繁殖的浮游生物的形象得到增强，必须使这一波段的正片记录曝光过量。

Due to the very dark nature of the scene , other metering methods tend to overexpose the moon .

为了使大量繁殖的浮游生物的形象得到增强，必须使这一波段的正片记录曝光过量。

So,the panchromatic data of CBERS-02B is high resolution data with high quality and wide prospect of application.

因此，CBERS-02B的全色波段是一种较高质量的高分辨率数据，应用前景广阔。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐