The time integrating of the model was carried out by taking the topography forcing as the lower boundary condition.
用此模式对地形强迫为下边界条件进行时间积分。
Perhaps the threshold for attaining a diagnosis of ADHD will be lower for your children: it's a condition, like many others, with a notably flexible diagnostic boundary.
也许对你的孩子来说确诊为ADHD的界限会降低：这是一种病症，和许多其他病症一样，确诊界限有着很大的弹性。
The time-dependent ion transport equations were numerically solved along fixed magnetic flux tubes. The lower boundary (100km) condition is set to chemical equilibrium.
模型的地理轴和地磁轴是分开的，离子的输运方程沿固定的磁流管求解。
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