The basic principles and sensor construction of several methods used for measurement of void fraction in cryogenic two-phase flow were reviewed,including attenuation sensors,microwave type,RF sensors,and capacitance type.
对目前几种用于测量低温气液两相流空泡率方法的基本原理、传感器结构及国内外研究情况进行了综述,包括辐射法(射线吸收法)、微波法、射频法、电容法,分析了4种方法的优缺点,在比较4种方法的基础上,提出了目前采用电容传感器测量气液两相低温液体空泡率的优势及设计准则。
X-ray absorption spectrometer
X射线吸收式光谱仪
soft X-ray absorption spectroscopy
软Ｘ射线吸收光谱术
X-ray absorption near edge structure
Ｘ射线吸收近边结构
gamma absorptiometer
γ射线吸收测量仪;γ射线吸收计(测铀钚等浓度用)
extended x ray absorption fine structure
扩展x射线吸收精细结构
gamma-ray absorption fluid density meter
伽马射线吸收型流体密度计
International XAFS Society (IXS)
国际X射线吸收精细结构学会
portable X-ray absorption analyzer
便携式X射线吸收分析仪
Study of Si Based Diluted Magnetic Semiconductors by X-ray Absorption Fine Structure
Si基稀磁半导体的X射线吸收谱学研究
Study of Mn-doped Ⅳ Group Diluted Magnetic Semiconductors by X-ray Absorption Fine Structure
Mn掺杂Ⅳ族稀磁半导体的X射线吸收谱学研究
The ratio of absorbed to incident radiation.
吸收比吸收投射的辐射线的比率
X-ray fluorescence absorption
爱克斯射线荧光吸收
the reduction of the intensity of radiation as a consequence of absorption and radiation.
放射线的强度由于辐射和吸收而减少。
beta absorption gauge
按吸收原理工作的β射线测量计
Strictly speaking, it is not possible to absorb gamma rays completely.
严格来说，不可能把γ射线全部吸收掉。
This radiation, in its turn is absorbed and reemitted.
这新的射线再次被吸收，而后释放。
STUDY ON MEASUREMENT CONDITION OF THE MASS ABSORPTION COEFFICIENT FOR GAMMA-RAYS
γ射线质量吸收系数测量条件的研究
Relation between the Lyman-α Emission and Absorption Lines of Quasar Pairs
类星体对的Lyman-α吸收线和发射线的相互关系