Servodyne
伺服系统的动力传动(装置)
🗣️ 情景例句
How are you doing?
你怎么样？
Isn't your wife's name Ethel?
尊夫人的名字是不是叫艾雪儿？
He sent yet another fax informing the journalist that if he did not reply soon he would be fired.
于是他又发了一份传真，通知那位记者说，若再不迅速答复，将被解雇。