uranium 235

Study on Separation of Xenon and Krypton from Fission Products of Uranium-235

从铀裂变产物中分离氪、氙的技术研究

The ratio of those causing fission to those escaping increases as the mass of uranium-235 increases.

随着铀235大量增加,导致那些分裂的对那些逃脱的比率增加.

However, nuclear power reactors need uranium with U-235 at a concentration of 30 in 1,000.

但核发电厂的反应堆所需要的铀,起码得把铀235富集到千分之三十.

Hyperfine structure of highly-lying levels of Uranium 235 using TLS method

利用三能级光谱技术研究~（235）U的高激发态超精细结构

It is necessary to enrich the fuel by increasing the percentage concentration of uranium-235.

必须提高铀235浓度的百分比,使燃料浓集.

A nuclear weapon in which enormous energy is released by nuclear fission ( splitting the nuclei of a heavy element ( uranium 235 or plutonium 239)).

一种由原子核（裂变重元素（铀或钚）的原子核）裂变释放巨大能量的武器。

Only 7 uranium atoms of every 1,000 are U-235.

在每1000个铀原子当中,只有七个是铀235.

( A uranium bomb runs on more than 90 percent uranium 235.) In today's reactors, some uranium 238 is converted to plutonium that is used as a small, supplemental fuel, but most of the plutonium is left behind as waste.

在目前的反应堆里，一些铀238被转化成钚，作为一种用量较小的辅助燃料来使用，但绝大多数的钚都会剩下来，成为废料。

The fuel was enriched with uranium 235 for the nuclear reactor.

核反应堆的燃料被铀235浓缩.

AIM To study the stimulatory effect on DNA synthesis and unscheduled DNA synthesis ( UDS) in splenic lymphocytes induced by low dose enriched uranium 235 U.METHODS By using 3 H-TdR incorporation assay technique, the DNA replicative synthesis of splenic lymphocytes stimulated by PHA and LPS was observed.

目的：研究了低剂量浓缩铀对脾淋巴细胞DNA合成和UDS的刺激效应。方法：运用3H-TdR掺入技术，观察了脾淋巴细胞在PHA和LPS刺激下的DNA复制合成。