She awoke to the ringing of an electric bell.
她醒来时听到电铃在响。
He awake with the ringing of an electric bell.
一阵电铃声使他从梦中醒来。
An electric bell is arranged in the circuit between each voice operated switch and the power supply.
在各个声控开关与电源之间的电路上设有电铃。
By using the receptive relaxation reflex of the stomach as a basis, artificial conditioned reflex has been established with the sound of an electric bell or a metronome as indifferent stimulus.
用食道扩张刺激为基础，以电铃声或节拍器声作为条件刺激，可形成胃容受性舒张的条件反射。
By using the receptive relaxation reflex of the stomach as a basis, artificial conditioned reflex has been established with the sound of an electric bell or a metronome as indifferent stimulus.
用食道扩张刺激为基础，以电铃声或节拍器声作为条件刺激，可形成胃容受性舒张的条件反射。
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