上层玻璃体被轻轻放置在一片介于玻璃与地面之间的深色铁斑表面的砖基础之上，柔化了北立面的高差。
The upper level glass volume hovers lightly over a dark iron-spot brick base that mediates between glass and ground and negotiates the grade change along the north elevation.
在此基础上简化模型，推导出了高差混油浓度分布的基本方程。
So the model was simplified without consideration of the viscosity variation, and an equation for contamination concentration distribution caused by elevation difference was developed.
本文对较适用于监测网的拟稳平差方法作了简要介绍，并在此基础上提出了顾及两次复测期间地壳运动对观测高差影响的动态方案。
According to the method, a dynamic scheme which concerns the influence of crustal movement be-tween two re-surveys on the observed elevation difference is proposed.
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