高级搜索提供用户以日期、语种、布尔逻辑和近似条件搜索。

Advanced search provides users with the date, language, Boolean logic and search for similar conditions.

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对比绝热近似时的情形，给出一种二能级系统的绝热近似条件。

We present the adiabatic condition of two states system after contrasted it with adiabatic models.

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实际中，小井源距多波vsp观测的直达波满足这种沿垂直对称轴方向的近似条件，因此本方法具有重要的实际意义。

In practice, direct wave in near-offset multiwave VSP satisfies this approximate condition; so this method is of practical importance.

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