If the method is used, the calibration of the standard gray scale is not need and the object transmission density on large area can be measured accurately.
利用改变曝光时间t和改变透射率τ对曝光量的改变是完全等价的这一原理,不用借助任何标准密度灰片校准,可在大面积上足够精准地测量物体透射密度。
The GRIN lens(GL) end pump coupling system has been studied in this paper.
本文对用于端面泵浦的梯度折射率透镜耦合系统作了研究。
So GRIN lens will be applied widely in optical communication.
因此梯度折射率透镜在光学通信等方面的光学系统中具有广泛的应用前景。
A comparation between the bicylindrical lens and the GRIN lens made the GRIN lens to be selected for its bigger alignment tolerance.
设计了波长为850 nm的4×4阵列光互连模块,利用ZEMAX软件对使用双柱面透镜和梯度折射率透镜的系统光路进行了模拟计算,通过比较,设计最终采用了对准容差更大的850nm梯度折射率透镜。
optical transmission density
光学透射密度，即光学玻璃或器材的透光程度，是不透明度的对数
Geometric conditions for measuring transmission density
GB/T11500-1989摄影透射密度测量的几何条件
ionizing radiation transmission density meter
电离辐射透过式密度计
scanning transmission microdensitometer
扫描透射显微密度计
gamma-ray penetration type liquid density meter
γ射线穿透式液体密度计
Fabrication of high-aspect-ratio and high-density X-ray transmission grating
大高宽比、高线密度X射线透射光栅的制作
Influence of the Multipole Effects to the Opacity of Hot and Dense Plasmas;
高温稠密等离子体辐射不透明度的多极效应
density meter(of ionizing radiation)
（电离辐射）密度计
ionizing radiation transmission thickness meter
电离辐射透过式厚度计
modulated beam microdensitometer
调制射束显微密度计
Density meters utilizing ionizing radiation
GB/T13980-1992电离辐射密度计
radioactive sediment density probe
放射性沉积物密度探针
scanning reflective microdensitometer
扫描反射显微光密度计
radioisotope densimeter
放射性同位素密度计
The density logger consists of a radiation source.
密度测井仪包括辐射源。
Thickness of consistency;impenetrability.
致密度一致的程度，不可穿透性
ionizing radiation backscatter soil density meter
电离辐射反散射土壤密度计
diffuse transmittance
漫射透光率,漫射透射比