The chain reaction that actually runs the reactor can be shut off in a matter of seconds.
实际运行反应堆的链式反应可以在数秒左右被关闭。
Japan itself had a Level 4 accident in 1999, when three workers preparing fuel for a reactor at a Japan Nuclear Fuel Conversion plant triggered a nuclear chain reaction, called a criticality.
日本在1999年就曾发生过一次4级核事故（又称“东海村核事故”——译注），当时在日本核燃料转换公司（Japan NuclearFuel Conversion）的一个燃料厂内，三名正在为反应堆准备燃料的工人引发了一次链式核反应，使反应堆达到临界状态。
The chain length of hydrocarbons depends on such factors as temperature, type of catalyst and type of reactor employed.
烃类的链长度决定于所用温度、催化剂类型和反应器类型这样的因素。
The reactor will operate at a safe temperature as long as the control rods are able to control the chain reaction and cool water is pumped into the reactor continuously.
只要控制棒能够控制反应，并且冷水可以被连续泵回反应器，那么反应堆就可以在一个安全的温度下一直运行。
All starch in the influent can be converted to short chain fatty acids , biomass and biogas in the TUASB reactor.
淀粉能够完全转化为挥发性有机酸、微生物污泥、生物气；
All starch in the influent can be converted to short chain fatty acids , biomass and biogas in the TUASB reactor.
淀粉能够完全转化为挥发性有机酸、微生物污泥、生物气；
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