查询词典 fast neutrons

This means they can be easily shielded from the damaging neutrons.

这表明人们很容易保护燃料，免遭中子的破坏。

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

译：虽然某个元素的所有原子核都含有相同数目的质子，但它们含有的中子数可以不同。

With positively charged protons and neutrons without charge of the nucleus.

带正电荷的质子和不带电荷的中子组成原子核。

Because they are neutral electrically, they are called "neutrons".

由于它们呈电中性，所以被称为&中子&。

OBJECTIVE: To explore the apoptosis of neutrons caused by sleep deprivation as well as the expressive changes of related genes.

目的：探讨睡眠剥夺引起的神经元凋亡与相关基因表达的变化。

This is done by absorbing excess neutrons in boron control rods.

这要用硼控制棒吸收多余的中子来完成。

They have the same number of protons in their nuclei (this is the defining characteristic of an element), but different numbers of neutrons.

在它们的原子核中质子数是相同的（这是一个元素定义性的特征），但是中子的数量不同。

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。

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。