例句與造句

1. For ammonia, NH 3, the symmetric bending vibration is observed as two branches near 930 cm  " 1 and 965 cm  " 1.
2. This so-called inversion doubling arises because the symmetric bending vibration is actually a large-amplitude motion known as inversion, in which the nitrogen atom passes through the plane of the three hydrogen atoms, similar to the inversion of an umbrella.
3. It's difficult to find symmetric bending vibration in a sentence. 用symmetric bending vibration造句挺難的