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

单词	profitless
释义	profitless　 ['prɒfitlis]a. 无利的, 无益的
随便看	signal correlation signal counterbalance signal coupling loop signal cover signal current signal current output signal cut signal damping signal data recorder signal delay signal delay time signal demodulation signal demodulator signal detection signal detection ability signal detection theory signal detonator signal device signal device signal discrimination signal discriminator signal distance signal distortion signal distortion generator signal distributor

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