Level 1 energy efficiency or level 3 energy saving?
呀,出错误了!再试下吧。
暂时没有您的查询历史
不再显示查询历史
first class/grade; first degree; class A; one-level; one-stage; one-order
energy efficiency
still; nevertheless; all the same; just the same; may as well; had better; beyond expectation; or; no matter what/how; regardless of; whether...or...