Heptode
n. 七极真空管\\n[电] 七极管
🗣️ 情景例句
You don't need to call a plumber, I can fix the sink.
你不必请水管工人了，我会修水槽。
To minimize any possible damage, we've packed our goods in the way to suit for long sea-voyage.
为使损失减少到最低限度，我们对货物的包装足以承受长途海运。
Yes, we have to double it.
是的，我们必需加倍。