| 1. | Near field spread spectrum range algorithm based on software radio
基于软件无线电的近距离扩频测距算法 |
| 2. | The product spectrum ranges from simple carbon steel and low - alloy steels to high - quality carbon steels
产品种类范围从简单的碳钢和低合金钢到高质量的碳钢。 |
| 3. | Modis has 36 observational channels , covering a wide frequency spectrum ranging from visible to infra - red radiation , making it valuable data source for a number of disciplines such as meteorology , oceanography as well as environmental monitoring
Modis拥有36条观察频道，覆盖了从可见光至红外光的广阔频率，使它成为一些学科如气象学海洋学甚至是环境监测的宝贵数据来源。 |
| 4. | Modis has 36 observational channels , covering a wide frequency spectrum ranging from visible to infra - red radiation , making it valuable data source for a number of disciplines such as meteorology , oceanography as well as environmental monitoring
Modis拥有36条观察频道，覆盖了从可见光至红外光的广阔频率，使它成为一些学科如气象学、海洋学甚至是环境监测的宝贵数据来源。 |
| 5. | Female courtship signal of the brown planthopper was made of many continuous regular pulses and male ' s signal was made of similar syllabics and had two types with different time domain characteristics . second male vibrational signal differed from male courtship signal with wide spectrum range and regular syllabics frequency . time domain characteristics of signals in different individuals even the same individual were different
频域特征分析知，褐飞虱雌虫求偶呜声信号的频域特性较稳定，个体内比个体间差异小；雄虫求偶呜声信号s 、 e片段频谱范围较宽，但主振频率比较接近，差异不显著； m片段频带较窄，主振频率mvf略小于s 、 e片段，变异较小； m片段脉冲重复频率prf为幻 |
| 6. | Electrostatic self - assembly multiplayer ( esam ) method has advantages in preparing films and develops fast in recent years . in this work , pdda / sioa complex films and sio2 anti - reflective films were prepared by esam method , and their optical properties in the visible light spectrum range and anti - scratching performance were investigated
本文用静电自组装( esam )法制备了聚电解质pdda与sio _ 2胶体粒子的有机无机复合光学薄膜以及sio _ 2光学增透膜，研究在可见光范围内透光性能及抗机械损坏能力等。 |
| 7. | According to the experimental data of droplet size 、 particle spectrum range 、 droplet cone shape 、 flow rate 、 cover area and cover area rate which obtained through changing the pressure of power sprayer and the nozzle diameter in greenhouse ， this paper made comparative analysis on atomizing performance in same pressure and different nozzle type between same nozzle type and different pressure . the conclusion is that : the ejection rate and the droplet cone shape change with the variation of pressure and nozzle diameter ， average particle diameter decreases obviously and particle quantity increases obviously with the increase of pressure and decrease of nozzle diameter . these results will lay experimental foundation for precise spraying 、 low pollution and highly effective operation
本文根据温室内动力喷雾机压力与喷嘴孔径的变化影响雾滴大小、粒谱范围、雾锥形状、流量、覆盖面积及覆盖面积率的试验数据，对相同压力下不同喷嘴型号和相同喷嘴型号时压力不同时的微粒化性能进行对比分析和研究，得到如下结论喷出量与雾锥形状随着压力和喷嘴孔径大小变化而变化；平均粒径随着压力的增加和喷嘴孔径的减小而明显减小；粒数随着压力的增加和喷嘴孔径的减小而明显增多，为精喷量、低污染、高防效的防除作业奠定了实验基础。 |
| 8. | According to the current problems such as low quantum efficiency . limited available sun energy spectrum range , and inefficient recovery , resulted from the practical using of photocatalysis , using the narrowband semiconductor cds ( eg = 2 . 5ev ) to compound with tio2 seems to be an effective solution . since it will not only enlarge the region of the absorption with the proper narrow band of cds but also improve the photodegradation efficiency on account of the band overlap of the two , which makes the photo induced electron and holes separate more easily
本文针对光催化技术应用中存在的tio _ 2光催化量子效率低，吸收利用太阳能光谱范围有限，催化剂回收困难等问题，通过窄禁带半导体cds ( e = 2 . 5ev )的复合，对纳米tio _ 2进行了改性研究，一方面，由于cds的窄禁带宽度可以扩展薄膜的光谱吸收范围，另一方面，由于能带的交叠，提高了光生电子和空穴的分离效率，从而提高了薄膜的光催化降解效率。 |
| 9. | Wide band - gap ii - vi materials , such as znse , znte and their alloys attract much attention due to their potential applications in light - emitting devices ( leds ) , laser diodes ( lds ) , optical bistable and optical nonlinear devices operqtynw in blue - green spectrum range for the fact that they exhibit large band gap and high exciton binding energy
宽带-族半导体材料，尤其是znse和znte及其合金具有宽带隙、直接带跃迁、激子束缚能大等优点而作为蓝和蓝绿发光、激光以及在该波段响应的光学双稳和光学非线性的重要候选材料。 |
| 10. | We adopt double alkali cathodal tube 9789qb , which was made by emi corporation in england , as our photomultiplier , whose spectrum ranges between 300nm to 650nm , with less noise counters and single - photon apices , which make it suitable as a single - photon - counter . the disparted - voltage device is designed in a reasonable way and the cooling system of iquefied nitrogen which makes it small in size , simple in structure , easy in processing , cheap in cost and good in performance
该管型的光谱范围在300 650nm ，具有暗计数少，有单光子峰的特点，适于做单光子计数器；本文的光电倍增管分压器设计合理而冷却系统采用液氮，该系统体积小、结构简单、加工便利、成本低廉且性能良好。 |
