“switch hook”的概念、定义、翻译、参考文献-科学参考

单词	switch hook
释义	switch hook [`swich ´hu̇k] ^ELECTRICITY A switch on a telephone set that operates when the receiver is placed on the hook or removed from it.
随便看	quitiqua Q unit quoin quoin post quotient quotient field quotient group quotient ring quotient set quotient space quotient topology Q value qwerty keyboard R r R.A. Ra Raabe's convergence test rabal rabbet rabbet plane rabbit rabbit ear rabble rabbling

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