分布在高速区的地震，主要活动在高速区内的速度变异地带。
The earthquakes in high velocity area were mainly occurred in variation belt.
经异地栽培试验证实，这种变异可能是遗传因素所致。
Experiment of field cultivation in different localities proved that the variation might be genetically related.
经异地栽培试验证实，这种变异可能是遗传因素所致。
Experiment of field cultivation in different localities proved that the variation might be genetically related.
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