查询词典 fast neutrons

A radioactive transuranic element produced by bombarding plutonium with neutrons.

一种放射性超铀元素，用中子轰击钚时产生。

A radioactive transuranic metallic element produced by bombarding plutonium with neutrons.

一种放射性超铀元素，用中子轰击钚时产生。

This nucleus is composed of positively charged protons , and electrically uncharged neutrons .

原子核中包括带正电的质子，和未带电的中子。

Atomic nuclei consist of combinations of protons, or positively-charged particles, and neutrons, or uncharged particles.

原子核是由质子与种子相结合而构成；之子也叫带正电荷的粒子，中子也叫不带电荷的粒子。

Atomic nuclei consist of combinations of protons, or positively charged particles, and neutrons, or uncharged particles.

原子核由质子与中子结合而成，原子核由质子与中子结合而成，质子也叫带正电的粒子，中子也叫不带电的粒子。

Superscript 525 Californium is the only one man-made radiosotope emitted neutrons which can be used clinically for brachytherapy.

(上标 252)鉲是唯一放射中子的人造放射性同位元素，在临床上用作短距离放疗。

Cosmogenic nuclides are primarily generated by reaction of target nuclei exposed near earth surface and galactic cosmic radiation. The reactions producing Cosmogenic nuclides mainly involve spallation, capture of neutrons and muon reaction.

宇宙成因核素主要是由来源于银河系的宇宙射线与暴露于地表的物质作用形成的，作用机制主要包括裂变、中子捕获和介子反应。

The inner part of the core is compressed into neutrons, causing infalling material to bounce and form an outward-propagating shock front.

核心的内部被压缩形成中子，造成崩落的物质反弹和形成向外传播的冲击波。

Bound by nonelectrical nuclear forces of terrible strength but of very limited reach, the six neutrons and six protons seem to touch.

由于受到强大的核力的作用，六个中子和六个质子似乎挨在一起。核力不是电子力，作用范围也很小。

The phenomena of nuclear fusion at room temperature have been studied using a gas discharge facility and about 104 neutrons per second have been detected.The neutron yield is controllable and reproduceable.

用气体放电方法研究常温核聚变现象，测到了强度为1×104n／s的中子，中子的产生稳定可控，重复性100％。

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。