These were previously undetected at visible wavelengths due to obscuration by the thick cloud (' globule body ') and by dust surrounding the newly forming stars.
但受其周围厚厚的云团(象鼻星云本身)和原恒星周围尘埃的影响，这些原恒星以前无法被可见光波长的探测器所发现。
Deal with the causes of obscuration, not with the sun.
（比如眼翳）需要治理的是障碍的成因，而非太阳。
Fire hazard testing - part 6-2: smoke obscuration; summary and relevance of test methods.
火灾试验。第6 - 2部分：烟雾不透明度。试验方法的概要及其相关方面。
In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one.
为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；
Some experimental results show that the method is an aid to differentiating and analysing the degree of infrared smoke screen obscuration accurately.
实验结果表明该评价方法有助于对遮蔽程度作出准确判别与分析。
Signature control can be accomplished with a variety of methods such as obscuration, surface appliques, shape tailoring, active cooling and integrated designs.
控制的主要方法有遮障、表面处理、外形技术、主动冷却、总体设计等。
Signature control can be accomplished with a variety of methods such as obscuration, surface appliques, shape tailoring, active cooling and integrated designs.
控制的主要方法有遮障、表面处理、外形技术、主动冷却、总体设计等。
应用推荐