The failure factors of the vacuum electron tube have also been studied.
本文分析了电真空器件的失效因素 ,指出各个因素对电真空器件失效的影响大小。
In this paper we have studied the main field failure factors of crystalline silicon PV module, propose relevant methods in design and manufacture process, in order to improve reliability of crystalline silicon PV module.
本文分析研究了晶体硅光伏组件野外应用中主要失效因素,提出在设计制造过程中采取相应的措施,以提高晶体硅光伏组件的可靠性。
extinct natural radionuclides
消失的天然放射性核素
extinct natural radionucleus
消失的天然放射性核
secondary natural radionuclides
次生天然放射性核素
induced natural radionuclide
感生天然放射性核素
Estimation of Natural Terrestrial External Exposure Levels of Nuclides in Soils in Chengdu
成都市土壤天然放射性核素的外照射水平估算研究
A nuclide that exhibits radioactivity.
放射性核素表现出放射性的核素
APPLICATIONS OF NATURAL ISOTOPES OF ~7Be AND ~(210) Pb IN ATMOSPHERIC SCIENCE
天然放射性核素铍-7和铅-210在大气示踪研究中的应用
The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china
我国水泥产品天然放射性核素比活度的调查分析
These artificial radio-elements behave in all respects like the natural radio-elements.
这些人造的放射性元素在各方面的表现和天然的放射性元素一样。
radionuclide studies of digestive system
消化系统放射性核素检查
Natural Radioactive Nuclide Level of the Agricultural-animal Products and Annual Comunity Intake in Lanzhou City;
兰州市农畜产品天然放射性核素含量水平与公众年摄入量
Contrast Study on Natural Radioactive Nuclides Contents of Rice between Xiangshan Uranium Deposit Area,Jiangxi and Non-Uranium Depsoit Area
江西相山铀矿区与非铀矿区稻谷中天然放射性核素含量对比研究
alpha-emitting radionuclides
发射α粒子的放射性核素
A naturally occurring or artificially produced radioactive element.
放射性元素自然产生或人为制造的放射性元素
Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.
α粒子是从天然放射性蜕变得到的带正电的氦核。
a radioactive isotope of an element; produced either naturally or artificially.
天然存在或人工合成的某种元素的放射性同位素。
Seventy of the 350 naturally occurring isotopes are radioactive.
自然界有350种天然同位素，其中70种有放射性。
Detection of Alpha Radioactivity Using Autoradiography With Phosphor Screen
用磷屏放射自显影法测量α核素的放射性活度