查询词典 fast neutrons

That water signature is in the form of oxygen isotopes, atoms of oxygen with different numbers of neutrons.

这种水的特质以氧的同位素的形式来体现（这里的同位素是指中子数不同的氧原子）。

The number of protons and neutrons in each element can vary, but only certain combinations are stable.

每一种元素中质子和中子的数目可能有所不同，而只有一些元素的组合比较稳定。

Based on Dempster-Shafer theory, a method of statistics of neutrons data is described.

与传统的概率统计方法相比，该统计方法能适用于非精确性数据，且不受样本大小的限制。

Those with the most numbers of protons and neutrons are in the upper right portion of the chart.

那些最数目的质子和中子都在右上部分的图表。

For example, we know that within a certain time period neutrons decay into protons and some other particles.

试举一例：我们知道，中子在一定的时间里会衰变成质子和某些其他粒子。

As the universe expanded and cooled, some of these particles merged to form neutrons and protons.

在宇宙的扩大与冷却的过程中，这些粒子的一部分渐渐融合并组成了中子与质子。

Today, besides the electrons, protons and neutrons, many more particles have been discovered .

今天除了电子、质子和中子外，还发现了更多的粒子。

Even protons and neutrons do not exist, for those things contain quarks as parts.

甚至质子和中子也是不存在的，因为这些东西包含夸克作为其部分。

The nucleus of an atom is the small core of protons and neutrons.

原子的核是由质子和中子组成的小核心。

That water signature is in the form of oxygen isotopes , atoms of oxygen with different numbers of neutrons.

通过对牙齿中氧同位素的分析，我们就可以判断出你出生地的纬度和海拔。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。