an isogram connecting points at which something occurs or arrives at the same time
例句
用作名词 (n.)
In this paper we derive the formulas for the isochrones in homogeneous and gradient media,and give some numerical resul. 本文推导了均匀和梯度介质中的等时线公式并计算了二维均匀和梯度介质中等时线的几何特征。
The prestack migration into space should be based on accurate isochrones through the heterogeneous velocity model and the wave incidence angles. 空间叠前偏移是基于精确的通过不均匀速度模型的等时线和波的入射角。