按可能引起污染的程度被定级设施的英文

classified facility

• 按:    press; push down
• 可能:    possible; probable ...
• 引起:    give rise to; lead ...
• 污染:    pollute; contamina ...
• 的:    4次方是 The fourth po ...
• 程度:    level; degree
• 被:    quilt
• 定级:    score; rank define ...
• 设施:    installation; faci ...