Nitralloy
氮化合金; 渗氮合金
🗣️ 情景例句
Hello, Sally. I'm glad to meet you.
你好，萨里，很高兴见到你。
We can't write very well.
我们不能写那么多。
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？