According to topographical situation of Yanan Pipeline, conduct dead weight oil transporting test a - gainst elevation difference.
根据安延管道的地形情况，利用高程差进行了自压输油试验。
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.
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。
A new spiral trumpet interchange has such advantages as dealing with the large elevation difference, increasing the ramp length, reducing the longitudinal, saving land and so on.
一种新型螺旋式喇叭形互通立交具有克服大高差、增大匝道长度、减少纵坡、节约用地等特点。
The dam site of Baiyekou Reservoir is located in a narrow gorge of Wenyu river reach. Its topography condition is complex and the elevation difference of river valley is obvious.
柏叶口水库坝底地处文峪河谷河段，地形条件复杂，河谷高差较大。
The computation results showed that the effect of density differences when velocity of flow was small was obvious to the boundary of laminar flow in the elevation difference pipeline.
结果表明，在大落差管道，流速不大的情况下，密度差对层流边界层影响比较明显。
So the model was simplified without consideration of the viscosity variation, and an equation for contamination concentration distribution caused by elevation difference was developed.
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。
This paper introduces a basic principle and calculation formula of measuring the horizontal distance and elevation difference by central hair stadia, and analyzes its measuring precision.
介绍了中丝视距法测量水平距离和高差的基本原理及计算公式，并对其测量精度进行了分析。
Elevation difference by trigonometric leveling shall be corrected by spherical aberration.
三角高程测量高差值应进行球差改正。
Elevation difference by trigonometric leveling shall be corrected by spherical aberration.
三角高程测量高差值应进行球差改正。
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