Purognostics
[pl. ](用吹管测定的)矿物性(如可熔性, 焰色等)
🗣️ 情景例句
He's on the phone.
他在电话上。
We were pleased to hear from your letter of 6 August that you were impressed with our selection of toys.
我们很高兴收到你方8月6日来函得知你方对我们的玩具非常感兴趣。
No, it's OK.
没有，还好着呢！