| 单词 | 电磁能 |
| 释义 | 〔photonics〕The study or application of electromagnetic energy whose basic unit is the photon, incorporating optics, laser technology, electrical engineering, materials science, and information storage and processing.光子学：以光子为基本单位的电磁能量研究或应用，包括光学、激光科技、电工学、材料科学和数据储存与处理〔photon〕The quantum of electromagnetic energy, generally regarded as a discrete particle having zero mass, no electric charge, and an indefinitely long lifetime. See table at subatomic particle 光子，光量子：电磁能的量子，一般认为是有零质量、无电荷和不定长寿命的离散性粒子 参见 subatomic particle〔chaff〕Strips of metal, foil, or glass fiber with a metal content, cut into various lengths and having varying frequency responses, that are used to reflect electromagnetic energy as a radar countermeasure. These materials, usually dropped from aircraft, also can be deployed from shells or rockets.金属箔：含有金属成分的一些金属片、箔片或玻璃纤维，切割成不同长度并具有不同的反射频率，以反射电磁能来干扰雷达。这些材料通常由飞机上投下，也可布置于炮弹或火箭上 |
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