| 单词 | IRST |
| 释义 |
IRST
原声例句
新理念英语1 The researchers studied hundreds of university students in their f irst and second years of degree courses and at pre-degree " foundation" level and observed what drinks, if any, they brought into exam halls with them. 研究人员针对几百名大学生，对他们大一和大二的学位课课程考试和预科班入门级课程考试进行了研究，并观察他们随身带入考场的饮品。
英语百科
Infra-red search and track（重定向自IRST）
    An infra-red search and track (IRST) system (sometimes known as infra-red sighting and tracking) is a method for detecting and tracking objects which give off infrared radiation (see Infrared signature) such as jet aircraft and helicopters. IRST is a generalized case of forward looking infrared (FLIR), i.e. from forward-looking to all-round situation awareness. Such systems are passive (thermographic camera), meaning they do not give out any radiation of their own, unlike radar. This gives them the advantage that they are difficult to detect. |
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