英语词汇spectrum emission简单造句、意思、用法及例句-英语例句辞典

单词	spectrum emission
例句	原声例句 PBS趣味科普 This is called an emission spectrum. 这叫做发射光谱。
随便看	order of protection order of reaction order of release order of succession order of the court order of the day order order order, ordering order out order out of chaos order paid order paper order papers order part order point order policy order preserving order priority order production order quantity order quarantine order register order release order requirement order routines

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