evolved gas

• 逸出气体

evolved gas的用法和样例：

例句

1. When heated, these metal hydride powders decompose, liberating the gas.
   这种金属氢化物的粉末，在受热后会分解，释放出气体来。
2. When they chew their cud, they regurgitate some food to rechew it, and all this gas comes out.
   它们反刍时，就会将食物重新咀嚼，于是就释放出气体。