正（负）电子与原子的碰撞理论是原子与分子物理主要的研究领域。
Positron or electron-atom collision theory is a main and fundamental area of atomic and molecular physics.
研究岩石和矿物是，地质学家用原子、分子和晶体的化学与物理概念。
In their study of rocks and minerals geologists apply chemical and physical concepts of atoms, molecules and crystals.
研究岩石和矿物是，地质学家用原子、分子和晶体的化学与物理概念。
In their study of rocks and minerals geologists apply chemical and physical concepts of atoms, molecules and crystals.
应用推荐