基本释义:

一次放射,原放射

网络释义

1)primary emission,一次放射;原放射

2)primary electron emission,一次放射;原发射

3)secondary radiation,二次放射

4)dynode,二次放射极

5)second-order activity,二次放射性

6)radioactive atom,放射性原子

用法和例句

A radioactive atom could transmute itself into an entirely different kind of atom.

放射性原子本身能嬗变为性质完全不同的另一种原子。

Alpha particles emitted by radioactive nuclei have energies of a few Mev.

由放射性原子核发射出的α粒子能量一般为几个Mev。

a clean nuclear bomb.

无放射性尘埃的原子弹

(the sending out of)rays and atomic particles from radioactive substances

（自放射性物质中放射出的）射线和原子粒子

atomic radiation

原子放射，原子辐射

Radioactivity is the ejection of particles or radiation from the nucleus.

放射性是原子从核中射出粒子或辐射的现象。

The intensity of a radioactive source.

放射性放射原的强度

radioisotope tracer technique

放射性同位素示踪原子技术

Research on SCB Discharge Behavior with Atomic Emission Spectroscopy

原子发射光谱法研究SCB放电特性

active particles

放射性[活性]粒子

The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay.

半衰期放射性样品的原子核经历一半放射性衰变所需要的时间

This conviction was based solely on the atomic nature of radioactivity.

我们的这种信念完全依赖于原子的放射性属性。

a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy.

具有放射性的钴的同位素，原子质量数为，一种能量极高的伽马放射源，用于放射疗法。

a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium.

15个从锕到铹的原子量递增的放射性元素。

The radiation, including alpha particles, nucleons, electrons, and gamma rays, emitted by a radioactive substance.

辐射由一种放射性物质发出的辐射，包括α粒子、原子核、电子、和γ射线

any element having an atomic number greater than 92" (the atomic number of uranium); all are radioactive.

原子序数在以后（铀的原子序数）的元素，都是放射性元素。

A radiotraler method and a membrane concentration potential method were established to determine the sodium ion transport numbers.

建立了放射性示踪原子法和膜浓差电位法测定钠离子迁移数。

Therapeutic effect of transcatheter arterial chemoembolization combined with radiofrequency ablation or ~(125)I interstitial brachytherapy on primary hepatocellular carcinoma:a comparative study

肝动脉化疗栓塞联合射频消融或放射性粒子组织间放疗对原发性肝癌的疗效比较研究