telegraph key

导读:telegraph key读音音标
英 [ˈtelɪˌgræf ki:]美 [ˈtɛlɪˌɡræf ki]
telegraph key意思解释
释义发报电键; 英英释义 telegraph key n.key consisting of a lever tha

telegraph key读音音标

英 [ˈtelɪˌgræf ki:]

美 [ˈtɛlɪˌɡræf ki]

telegraph key意思解释

释义

发报电键;

英英释义

telegraph key

n.

key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed

telegraph line
telegraph
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