英语词汇parallel beam是什么意思，parallel beam的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	parallel beam
释义	DEFINITIVE EXAMPLES 权威例句〔reflector〕The parabolic reflector of a searchlight gives a parallel beam.探照灯的抛物面反射镜发出平行光束。英汉大词典
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