本文:If more than one spray is located in an interstand space, then whether an
up-hill spray in the same interstand space as a down-hill spray is on or not
can change the cooling capability of the down-hill spray.
这里的whether or not语法是看得懂..但是中间插了"as a down-hill spary"...
就看不懂了..烦请解惑...谢谢!