An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction.It is used with a pyrheliometer to make continuous measurements of solar radiation.
定日镜一种仪器,装有一面会自动调控
镜子,以便不断朝某一恒定方向反射日光。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。
But while a spacesuit could protect lunar tourists against the vacuum of space, a lack of oxygen, temperature extremes, and lethal solar radiation, a potential hazard that spacesuit would do little to protect against, is high-velocity micro-meteorites.
即使
空服
以对付月球的真空。月球上缺乏氧气、温度极端、还有致命的
辐射,但是
空服提供的有限的保护还是无法避免潜在的危险,就是高速的微小陨石。