Comsol
银铅焊料, 银锡软焊料（熔点296°C）
🗣️ 情景例句
My favorite snacks are soda, popcorn and potato chips.
我最喜欢的零食是汽水、爆米花和薯片。
I'd appreciate it if you'd wait until be end for questions.
如果你等我做完再询问我会感激你的。
What kind of music does he sing?
他演唱哪种音乐？