barium protoxide

例句：

1. 1. The chemical reaction between barium and oxygen produces barium oxide.
   钡与氧气之间的化学反应产生钡的氧化物。
2. 2.The compound is used in the production of barium oxide for lighting purposes.
   该化合物用于生产钡的氧化物，用于照明目的。
3. 3.Barium oxide is a white powder that is commonly used as a pigment in paints and coatings.
   钡的氧化物是一种常见的白色粉末，常用于油漆和涂层中作为颜料。