plasma without sodium

例句：

1. 1. The plasma in the lab is very important for understanding the behavior of atoms.
   实验室中的等离子体对理解原子的行为非常重要。
2. 2. The plasma reactor is used to produce clean energy.
   等离子反应器用于产生清洁能源。
3. 3. The plasma jet is used to spray paint on a wall.
   等离子喷枪用于在墙上喷涂油漆。