A fission reactor works by maintaining a controlled nuclear chain reaction.
一座裂变反应堆需要在可控的核裂变中运转。
The catalyst has high activity, selectivity and the characteristic of reaction controlled phase transfer catalyst.
该催化剂具有高活性、高选择性，且具有反应控制相转移催化剂的特性。
The second photoperiodic reaction is controlled by a recessive gene.
第二光周期反应属一对主效隐性基因控制。
Both of the reaction were controlled by electro-chemical polarization.
两个放电步骤均受电化学极化控制。
The speed of the chain reaction and the temperature of the fuel are also controlled by the water in the reactor vessel.
链式反应的速度和燃料的温度也受到容器中的水的控制。
The reaction temperature was moderate and the operation was easily controlled.
反应条件温和，操作容易控制。
The reaction temperature was moderate and the operation was easily controlled.
反应条件温和，操作容易控制。
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