An overview of research on reasonable cover thickness for underwater tunnel by drill - blasting method 水下隧道钻爆法施工合理覆盖层厚度的研究评述
Non - conductive coatings on non - magnetic basis metals - measurement of coating thickness - eddy current 非磁性基体金属上非导电覆盖层覆盖层厚度测量涡流法
The thickness of site overburden layer is one of important reasons that affect the predominant period of ground micro - tremor 覆盖层厚度是影响地脉动卓越周期的重要原因。
The deleterious effects of pressurized seepage , percolating through the natural discontinuities in the rock mass , have generally been ignored , resulting in tunnel alignments with inadequate lateral and vertical cover 压力隧洞传统计算方法假定围岩是不透水介质，忽略了围岩中渗流和渗透力的不利影响，从而导致设计时隧洞轴线方向上覆盖层厚度不足。
The smaller the the difference of the temperature of feedwater and backwater is , the more evenly and slowly the temperature distribution is . the smaller the thickness of overburden layer and the distance of two tubes are , the more evenly and slowly the temperature distribution is 在供回水温度和覆盖层厚度均不变的条件下，排管间距越小，其温度分布越为平缓，地板表面的温度分布也越为均匀，地板表面平均温度也越高。
Fourth , there exists some corresponding relationships between spectral structure characters of ground micro - tremor and shear wave velocity of site soil layers . the outcomes of these two kinds of tests can be conferred each other . fifth , the correlations between predominant period of ground micro - tremor and thickness , and value of shear wave velocity of overburden layer are established 第五，建立场地土覆盖层厚度、剪切波速与地脉动卓越周期之间的相关关系，有助于通过勘测场地土覆盖层厚度的结果估算场地地脉动的卓越周期，以及揭示场地土剪切波速与地脉动卓越周期的内在相关规律。
To make the thermal efficiency best , y , a , av / as should be : r : [ 60 - 75 ] a : [ 1 - 1 . 5 ] av / as : [ 0 . 8 - 1 ] in this paper , numerical model of solar radiant floor heating system is also built . the model of numerical model is solved by finite differance method . the smaller the distance to the tube is , the higher the temperature on the surface of the floor is 地板表面相邻两管间水平方向的温度分布：距离加热管越近，温度越高；两管中间处温度最低；供回水温差越小，地板表面温度分布越平缓；在供回水温度和排管间距均一定的情况下，地板覆盖层厚度越大，其温度分布越为平缓，对应的地板表面温度分布越均匀。
