Supernilvar
尼尔瓦超低膨胀系数合金, 尼尔瓦超恒范合金, 超尼尔瓦铁镍钴合金
🗣️ 情景例句
Does the name Harvey Carlson ring a bell?
对Harvey Carlson这个名字有印象吗？
John would like to touch some of the sculpture in the art gallery.
约翰想触摸几件美术馆的雕刻。
It is because his feet move on, but his head stays still.
这是因为他的脚动了，而他的头保持着静止。