中非区域航空合作计划 China-Africa Regional Avia-tion Cooperation Plan
空中区域性环境调查 Aerial Regional-scale Environmental Survey
冬季它象太阳能采热板一样吸附太阳热能，在两层玻璃的中空区域形成热屏障，抵御室外寒气；
In winter, it absorb solar heat energy as solar panel, and form heat barrier in the hollow area to prevent chilliness;
所述分散体可以用作在建筑组件之间的中空区域的阻燃填充物的组分，尤其是用于绝缘玻璃配置。
It can be used as a component of a flame-retardant filling of hollow Spaces between building components, in particular for insulating glass arrangements.
这些结果表明，改变聚焦透镜的焦距和聚焦透镜到轴棱锥间的距离以及光阑半径，可有效地改变局域空心光束的暗中空区域。
It is shown that by changing the focal length of focal lens and the distance between the axicon and the lens, the center of dark of the bottle beams can be altered effectively.
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