The attenuation coefficient decreases with increasing of frequency and the gas density.
衰减系数随频率增加而减小，并且随密度增加而减小。
Before charging and blasting in gas tunnel, safety inspection must be done to ensure the gas density less than 1%.
瓦斯隧道装药爆破前必须进行安全检查，确保瓦斯浓度小于1%。
The range of upper corner and mix gas density is decreased as the face wind speed increased if gas emission is fixed.
在瓦斯涌出量一定的情况下，随着风速的增加，上隅角的范围呈减小趋势，且其内混合气体密度越小。
The system of gas predicting alarming is designed by the paper, and it can monitor continuously the change of gas density under mine.
本文所设计的瓦斯预测报警系统可以连续监测井下的瓦斯浓度变化。
The radio communication module is particularly discussed, and the application example of TC35 in CO gas density monitor is also introduced.
对无线通讯模块TC35进行了详细介绍，并给出TC35短消息收发模块在CO气体监测仪中的应用。
Density indicator: Display gas density, time and keyboard set value, etc.
浓度指示器：显示气体浓度、显示时间、显示键盘设定值等。
The calculating results show that the circulating flow rates are increasing with the submergence ratio but reducing with the liquid-gas density ratio.
计算表明，循环流量随浸没比的增大而增大，且随密度比的增大而减小。
It is recognized that the gas density relay can reflex the gas density in gas insulated electric equipment correctly and the pressure relay cant do the same.
一般认为气体密度继电器可以正确反映气体绝缘电气设备的气体密度，而压力继电器则不能。
It integrated temperature and pressure sensor with vortex sensor, and it realized the accurate measurement of mass flow through the compensation of gas density.
它将温度、压力和流量传感器融为一体，通过对气体密度进行补偿，实现了精确的质量流量测量。
The spectral modulation sensor system can detect and measure various physical parameters such as pressure, temperature, gas density, and various chemical species.
这种光谱调制传感器系统能够测量多种物理参数，如压强、温度、气体密度及多种化学成份。
This paper introduces the work principle of gas density testing system based on SCM AT89C51, and gives the hardware structure and software flow of testing system.
本文介绍了基于AT 89 C 51单片机气体浓度测试仪的工作原理，给出了测试仪的硬件结构及软件流程。
With the two dimensional electron gas model, considering the nonlinear shift of Fermi level with electron gas density, the DC output characteristics is calculated.
考虑费米能级随二维电子气浓度的变化，计算了器件的直流特性。
With a careful theoretical analysis various physical parameters such as the gas density, temperature, and pressure, and the ultraviolet and ionizing radiation fluxes can be derived .
通过仔细的理论分析，可以推导出如气体密度、温度和压力等各种物理参量，以及紫外辐射和电离辐射的流量。
With a careful theoretical analysis various physical parameters such as the gas density, temperature, and pressure, and the ultraviolet and ionizing radiation fluxes can be derived .
通过仔细的理论分析，可以推导出如气体密度、温度和压力等各种物理参量，以及紫外辐射和电离辐射的流量。
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