The origin time should be a few seconds before the time of the wave at the first station.
地震的起源时间应该比到达第一个站点的时间早几秒钟。
In view of this kind of situation, designs a reasonable origin station technical process.
针对这种情况，设计一个合理的首站工艺流程。
In view of this kind of situation, designs a reasonable origin station technical process.
针对这种情况，设计一个合理的首站工艺流程。
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