Spectral density
[电] 频谱密度
🧩 词语组成解析
spectral
['spɛktrəl]
adj. （似）鬼的;幽灵的;谱的;光谱的;
🗣️ 情景例句
I know about how business is done here.
我认为这方面比较在行。
I visited her last Wednesday.
我上个星期三拜访她。
There he was picked up by a policeman and sent back to England by the local authorities.
他在那儿被一个警察抓住了，之后被当局送回了英国。