Photogalvanometer
微量光电流计
🗣️ 情景例句
Not likely.
不可能。
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
It was only possible for the Ombudsman to find this out by sending one of his representatives to check the facts.
司法特派员只有派他的代表去核对事实才能了解真相。