Thrust of this mechanism is to limit milk production.
该机制的主旨就是限制牛奶产量。
In Haihe Lowland Plain, water shortage is the main limit factor for agriculture production.
海河低平原类型区，水资源不足是农作物产量的主要限制因子。
In Haihe Lowland Plain, water shortage is the main limit factor for agriculture production.
海河低平原类型区，水资源不足是农作物产量的主要限制因子。
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