单词	duration of two minute s
释义	英華☞duration of two minutes
随便看	unidirectional microphone unidirectional motor unidirectional potential unidirectional pulse unidirectional--pulse unidirectional pulse-amplitude modulation unidirectional pulses uni-directional random wave unidirectional reaction unidirectional relay unidirectional replication unidirectional ring unidirectional rotation unidirectional roving unidirectional shear flow unidirectional solidification unidirectional stepping relay unidirectional system unidirectional thyristor unidirectional transducer unidirectional transistor unidirectional transmission unidirectional--traveling wave antenna unidirectional turbine unidirectional valve