Method of field survey for debris flow is classified into two types: regional survey and gully investigation.
泥石流野外调查分为区域调查和沟谷调查2种。
Mountain Wulian Nature Reserve is located in the southeast coastal region of Shandong Province,to fully understand their community structure and species diversity,the author conducted a field survey,and obtained 11 standard samples,whose total area is 6 600 m2.
五莲山自然保护区地处鲁东南沿海地区,为全面了解其群落结构组成及物种多样性,作者进行了野外调查,共获得11个标准样方,面积6 600 m2。
Finally the article also illustrates the external regulating method for enhancing extraction capacity of the non-regulated turbine.
最后还举例说明了提高非调整抽汽能力的机外调节。
The new type velocity sensor takes infrared modulation circuit to lower the effects of surrounding light on velocity measurement, and its the velocity data acquisition system is equipped with industrial pulse counting block.
新型流速传感器采用红外调制电路以克服环境光对流速测量的影响 ,流速数据采集系统采用工业化脉冲计数模块 。
Effect of chirp in external modulator on 10 Gbit/s dispersion compensation system;
外调制器啁啾对10 Gbit/s色散补偿系统的影响
The key points to design high speed burst mode external modulator are presented,the effects of extinction ratio and chirp on optical transmitter are discussed,then the matching technology is discussed in detail.
阐述了高速突发模式外调制器电路的设计要点,着重讨论了消光比、啁啾对光发射机的影响,对匹配问题进行了详细讨论,设计了性能良好的前向匹配电路及电吸收调制器驱动电路,其工作速率为12 Gb/s,运用这些技术设计的光发射机消光比大于23。