incomplete combustion

• 不完全燃烧

incomplete combustion的用法和样例：

例句

1. Soot is the product of the imperfect combustion of fuel.
   煤烟是燃料不完全燃烧的产物。
2. Soot is caused by incomplete burning and makes smoke dark.
   油烟是起因于不完全燃烧而使烟变黑。