On the base of a plenty of facts we suggested a method in which bi-Gaussian form is approached the output pulse in multimode fibers The accuracy measuring band in time domain can be improved highly.
在综合大量实例的基础上，提出双高斯函数逼近多模光纤的光脉冲输出的解析近似方法，使时域法确定光纤带宽的精度大为提高。
This is calculated by measuring the width of the trading band and projecting it below support at 21000.
这是通过衡量交易带的宽度，并将它在21000点的支撑向下投射可以计算出来目标。
An example for measuring the conversion loss and noise temperature of mixers in millimeter wave band by using the noise measurement method is discussed in this paper.
讨论了一种利用噪声测量的方法来确定毫米波段混频器的变频损耗和噪声温度的一个实例。
This control system can provide automatic flying object tracking and measuring in visible and infrared band. It also can provide real-time output of the measured results.
该系统可以在可见和红外波段对飞行目标进行跟踪测量，还可对测量结果实时输出。
A method based on all band ultraviolet scanning for measuring water chemical oxygen demand (COD) was introduced, and the method was applied to develop an on-line COD measuring instrument.
介绍了一种基于紫外全波段扫描的水质化学需氧量(COD)测量技术以及运用该技术设计开发的在线COD测量仪器。
Active band-pass filters are widely used in signal analysis and measuring because of its good amplitude-frequency property.
有源带通滤波器以其良好的幅频特性，在信号的分析与测量中得到广泛应用。
In order to improve the precision and automation of old-fashioned band-sawing machine, its angle-measuring part was reconstructed.
为了提高老式带锯床的精度和自动化程度，对锯床的角度测量部分进行了数字化改造。
Because of the S-G water frequency band being used, it is possible to fast and nondestructive measure compaction of subgrade without water content measuring.
运用S—G水滞频段，无需测量土的含水量，就能快速、无损、定量的测定土的压实度。
As a newly ocean wave measuring device, X-band Marine radar wave measuring system is gradually getting more perfect.
基于此项技术的X -波段导航雷达测波系统，作为海洋观测和应用领域的新一代海浪监测设备，正在日趋成熟。
The W-band coherent Doppler radar has high precision. It is widely used in speed measuring.
W波段连续波相参多普勒雷达具有测速精度高的优点，广泛应用于多种测速场合。
Besides, in order to restrict the consumer risk of the verification result of one measuring instrument, the estimation method for reasonably setting the guarding-band is also discussed.
此外，为限制单台仪器检定结论的用户风险，还给出了合理设置保护带的近似计算方法。
By the electronic control measuring system, it can get metal band 'length or deviation quickly and accurately for choosing favorable melt band, and improves efficiency for assembling the metal belt.
利用电控测量仪，可以快速精确的得到金属带的长度或和偏差，以合理正确的选择在误差范围以内的金属带，为金属带组件的装配提高了效率。
By the electronic control measuring system, it can get metal band 'length or deviation quickly and accurately for choosing favorable melt band, and improves efficiency for assembling the metal belt.
利用电控测量仪，可以快速精确的得到金属带的长度或和偏差，以合理正确的选择在误差范围以内的金属带，为金属带组件的装配提高了效率。
应用推荐