Direct arrival base on the distance principle.
按距离原则直接平层。
It follows that the main additional requirement is that the multicomponent direct arrival, needed to initiate the iterative solution of the Marchenko equation, includes the forward-scattered field.
它遵循的主要附加要求是，该多组分直达波激发包括前向散射场马尔·琴科方程的迭代解决方案。
We prefer direct sailings as transshipment adds to the risk of damage and may delay the arrival .
我们宁可要直达船，因为转船增加了受损的危险，而且可能会耽误到货时间。
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