2) Neutral Variable Density Disk
中性变密度盘
1.
Investigation of Special-Function Large-Angular Neutral Variable Density Disk;
特定函数—大角度中性变密度盘的研制
3) neutral density filter
中性密度滤光片
1.
A superior programmable optical attenuator developed based on the attenuating principle of grey-scale neutral density filter and the control technology for optic-electric rotary encoder,achieves excellent performance which includes attenuation accuracy(±0.
基于灰度级中性密度滤光片衰减原理和光电旋转编码器控制技术研制成功的高性能程控光衰减器,取得了优良的衰减准确度(±0。
4) neutral density filter,ND
中性密度滤色镜
5) equivalent neutral density
当量中性密度
6) neutral density filters
中性密度滤光镜
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条