1) light tightness
光密性
2) light tight test
光密性试验
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) linear densitometer
线性光密度计
5) neutral density filters
中性密度滤光镜
6) optical unit airproof experiment
光单元密封性试验
补充资料：连续性与非连续性(见间断性与不间断性)
连续性与非连续性(见间断性与不间断性)
continuity and discontinuity
11an父ux泊g四f“山。麻以角g、.连续性与非连续性(c。nt，n琳t:nuity一)_见间断性与不间断性。and diseo红ti-
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