It takes ball screws as drive machine, engaged electromagnet to drive steady control rod up and down, disengaged electromagnet to drop the control rod rapidly.
该机构采用滚珠丝杠副的传动方式，通过电磁铁的吸合，可以带动稳态控制棒上下运行，当释放电磁铁时，可以实现快速落棒。
On load sharing condition, the planet-gear shows several advantages such as great transmission ratio, compact structure, high efficiency, large load capacity and drive steady.
行星齿轮传动只有在载荷分配均匀情况下才能发挥传动比大、结构紧凑、效率高、承载能力大、传动平稳等优点。
The survey showed that the proportion of men in their 30s who drive has remained steady, while twentysomethings appear to be putting off getting behind the wheel until it's absolutely necessary.
调查显示30来岁的开车男士人数比例保持稳定，然而二十多岁的年轻人似乎决定将开车这一问题推迟延后，除非是万不得已。
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