上覆层 meaning in English

onlap
overlying strata
superimcumbent bed
superstratum

Measurement of coating thickness - non contact measurement of coating thickness on continuously moving objects
测量覆层厚度.连续运动物体上覆层厚度的非接触测量
Second , the influence of angle was analyzed in the stresses analysis in the rock mass around the excavation . the stress field around pressure tunnels using the coupled seepage - stress model to evaluate , and the stability of the slope with impermeable surface is analyzed
在渗流场和应力场耦合的基础上对倾斜地表下压力隧洞围岩应力场特性进行分析；并对稳态渗流场下围岩应力场以及上覆层稳定性进行详细分析。