The few fissile materials could not maintain the chain type response (overwhelming majority neutron escape).
少量的裂变材料不能维持链式反应(绝大多数中子逃逸了)。
The immune response is an important method to maintain the immune balance inside body.
生物体的免疫应答机制是生物体维持免疫平衡的重要手段。
The immune response is an important method to maintain the immune balance inside body.
生物体的免疫应答机制是生物体维持免疫平衡的重要手段。
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