Considering the fuel salt flow effect of the molten salt reactor,the neutron dynamic model was derived based on the particle conservation equations,and the critical problem was calculated by numerical method under three working conditions to study the flow effect to effective multiplication factor,fast neutron,thermal neutron and delayed neutron precursors distribution.
考虑新概念熔盐堆燃料盐的流动特性,从基本的粒子守恒方程出发,推导了熔盐堆的中子动力学模型,并采用数值方法对3种工况下熔盐堆的临界问题进行计算,考察流动对有效增殖系数、快中子分布、热中子分布及缓发中子先驱核分布的影响。
T he miniaturization and the maintenance free of permanent magnetic operating mech anism can be achieved by electronic-controlled driving device.
笔者研制的智能控制与电子驱动装置采用CPLD完成智能控制,并采用由SCR和IGBT组成的电子开关通断合分线圈电流,它不仅能完成断路器的合分闸操作,还具有过流/欠压分闸、合分闸闭锁、以及操作系统的故障监测、诊断与报警等功能。
Gotthold Ephraim Lessing, the founder of German realism, is one of the pioneers of German Classics.
莱辛是德国现实主义文艺的创始人 ,也是德国古典文学时代的先驱。
AbstractHu Dunfu was one of the pioneers to introduce modern sciences into China.
内容提要胡敦复是最早在我国引进现代科学教育的先驱者之一。
Emily Dickinson,a famous 19th century American poetess,enjoys equal popularity with Whitman and is conferred the pioneer of the 20th century English and American Imagist movement.
狄金森是与惠特曼齐名的19世纪美国著名女诗人,一直被称为20世纪初英美意象派的先驱。
Research of Non-Persistent Fission Chains and Delayed Neutron Precursors in a Prompt Super-Critical System
瞬发超临界系统有限裂变链及缓发中子先驱核行为研究
Quasi-particle Shape Driving Effects in Odd-odd ~(174)Re
双奇核~(174)Re中的准粒子形状驱动效应
a preemptive at tack
(用核子武器的) 先发制人的攻击
He was known as the" father" of nuclear physics, pioneered the orbital theory of the atom, notably in his discovery of rutherford scattering off the nucleus with the gold foil experiment.
他被称为“核物理学之父”，是原子轨函数说的先驱，最著名的成就是利用金箔试验分离出了核子。
arthrochalasis multiplex congenita
先天性多发性关节弛缓
delayed neutron failed element monitor
缓发中子破损燃料元件监测器
delayed neutron fission product monitor
缓发中子裂变产物监测器
First strike capacity in a nuclear war, ie the ability to attack an enemy before they can attack you
核战争中先发制人的能力
any substance used to slow down neutrons in nuclear reactors.
任何在核反应堆中用来减缓中子运动速度的物质。
The Neutron Spectrum Measurement Research by Combining Detectors for Accelerator Driven System;
加速器驱动洁净核能系统中子能谱测量的叠层探测技术研究
Influencing Factor of Lithium Extraction in Lithium Ion Sieve Precursor from Ocean Polymetallic Noddle
大洋多金属结核制备锂离子筛前驱体中锂脱出的影响因素
Effect of Electron Beam Irradiation in Air on Chemical Structure and Pyrolysis Properties of Polycarbosilane Precursor Fibers
空气中电子束辐照对聚碳硅烷先驱丝化学结构与热解特性的影响
Active method of delayed neutrons to determine uranium enrichment
主动法缓发中子探测金属铀的~(235)U丰度
A forerunner or predecessor.
前人，先驱先行者或先驱
Dr. Sun yat-sen was a pioneer of the democratic revolution.
孙中山先生是民主革命的先驱。
A forerunner of those vehicles, though, is already being developed and tested.
不过这类飞机的先驱机型目前已在开发及测试中。
Between 1990-92, through experimentation, thermonuclear fusion reaction was achieved through the method of indirect driving, and thermonuclear neutron was observed.
接着在1990－1992年间通过实验，用间接驱动方式实现热核聚变反应，观察到了热核中子。
Design of Electro-Optic Modulator Drive Module in Continuous-Variable Quantum Key Distribution
连续变量量子密钥分发系统中调制器驱动设计