Heptode-mixer tube
[电] 七极混频管
🧩 词语组成解析
n. 七极真空管\\n[电] 七极管
🗣️ 情景例句
I don't like to waste my time chatting on the net.
我不想把时间浪费在网络聊天上。
We've arranged our schedule without any trouble.
我们已经很顺利地把活动日程安排好了。
With a stopwatch, they counted how many times the bees repeated the dance during one minute.
他们用秒表记录蜜蜂在一分钟内重复舞蹈的次数。