radar
n. 雷达, 无线电探测器 [计] 雷达图
发音
词形变化
别名
教材释义与例句
雷达，无线电探测器
释义与例句
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1.
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
雷达
不可数 可数They were able to find the enemy fleet using radar.
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2.
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
In full secondary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing signals transmitted by the object in response to radio waves sent towards the object.
不可数 引申义 可数 -
3.
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Often preceded by a descriptive word: a system using one of the above detection methods, differentiated by configuration or platform, frequency, power, and other technical attributes.
可数 不可数The Ministry of Defence funded the development of an entirely new radar and improved avionics.
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4.
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
An installation of the apparatus for operating one of the above detection systems.
可数 不可数Each of these aircraft has been upgraded with a new radar and a more powerful engine.
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5.
Often preceded by a descriptive word: a natural (for example, in an animal such as a bat) or human-made detection method based on the analysis of reflected signals other than radio waves, as light waves or sound waves; (countable) an instance of this.
不可数 引申义 可数 -
6.
A superior ability to detect something; an awareness, an intuition.
可数 比喻 不可数His sensitive radar for hidden alliances keeps him out of trouble.
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1.
To use a radar apparatus (noun senses 1, 1.1, or 2) on (someone or something); to scan (someone or something) with, or as if with, radar.
及物
词汇关系
同义词 1
上位词 1
下位词 2
部分词 7
相关短语
词源
The noun is derived from RADAR by anacronymic evolution. RADAR is an acronym of ra(dio) d(etection) a(nd) r(anging) which was coined by Lieutenant-Commander Samuel M. Tucker and Lieutenant-Commander F. R. Furth of the United States Navy in November 1940. The verb is probably derived from the noun.
来源：wiktionary