查询词典 neutrons

Atoms are made from a nucleus of protons and neutrons and a cloud of electrons.

原子是由质子和中子组成的原子核与围绕原子核的电子云构成的。

Although all nuclei of a given element contain the same number of protons, they may have different numbers of neutrons.

虽然，给定元素的所有原子核都含有相同数目的质子，但它们的中子数可以不同。

In the design and application of neutron guides, it is very important to simulate neutrons transmission by Monte-Carlo method.

利用蒙特卡罗方法模拟中子在导管中输运过程，在中子导管的设计和实验应用中可发挥重要作用。

All particles which are together with the neutrons and protons are called baryons.

所有与中子、质子放在一起的粒子统称为重子。

Only about 5% of our universe is made of normal matter as we know it, consisting of protons and neutrons, or baryons, which along with electrons, form the building blocks of ordinary matter.

我们知道我们的宇宙只有约5%是由质子和中子以及电子这些普通物质构成，剩下的由难以捉摸的暗物质（23%）和暗能量（72%）组成。

It can conclude that epithermal neutron has a good BNCT curative effectiveness; thermal and fast neutrons are not good enough for BNCT use.

说明超热中子具有良好的BNCT治疗效果，热中子和快中子不适宜用于脑部BNCT治疗。

Investigations are carried on the microstructure, mechanical properties and shielding effectiveness against thermal neutrons, 60Co and 137Cs rays of Fe78Si9B13 amorphous thin ribbons. Significant differences of micro- structure exist between the free face and wheel face.

对Fe78Si19B13非晶薄带的微观结构、力学性能进行了初步研究，并测试了非晶薄带叠层板材对高能射线（热中子及60Co、173Cs 2种γ源射线）的屏蔽效果。

The free neutrons can bombard other nuclei, leading to a series of fissions called a chain reaction.

自由中子可以轰击其它的核，导致一系列的裂变，称为链锁反应。

Nuclear fissions are caused by fast neutrons because little or no moderator is used.

由于少用或没用缓和剂而由快速中子引起的裂变反应。

Fast reactors, in contrast, do notemploy moderators and use much faster neutrons to produce fissions.

快反应堆，相反，不使用调节器而是使用更快的中子来产生裂变。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。