日盲紫外可见光双光谱照相机
solar blind ultraviolet and visible dual-spectral
手持微光双目望远镜
hand-held passive binoculars
X射线荧光光光谱
X-ray fluorescence spectrometry
771双光路全差示法
Two-Ray and Fully Differential Method
Bragg声光双稳系统
acousto-optic bistable(AOB) system
acousto-optic bistable AOB system
Bragg acousto-optic bistable system
保偏双光纤准直器
Polarization maintaining dual fiber collimator
polarization-maintaining dual fiber collimator
标形双光束光谱仪
comb-type doble beam spectrometer
差示-双波长分光光度法
Differential-double wavelength spectrophotmetry
磁光双功能
magnetic and luminescent bi-function
单、双光子吸收
one-and two-photon absorption