that near surface correction
that near surface correction
近地表校正
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The general assumption in calculating static correction is that the near-surface ray-paths travel vertically, which does not conform with the actual travelling path of ray.
静校正计算时一般假设射线在近地表附近为垂直传播，这种假设往往与射线实际传播的路径不符。
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