The seam gas content was logarithmic related to the seam vibration wave attenuationparameter. The gas content was linearly related to the quality divisor.
瓦斯含量与煤层衰减系数呈对数相关，与品质因子呈线性相关。
2
This paper describes the principle, method and apparatus for measurement of technical light attenuation length of plastic scintillators. The factors that influences this parameter are discussed.
本文报道了塑料闪烁体的技术光衰减长度的测量原理、方法和测量装置，并对影响此参数的因素进行了讨论；
3
Variations of geology and astronomy have constantly parameter variable auto-correlation function of vibration attenuation type.