Do mix grass cuttings with other wastes to loosen them up.

VOA: special.2009.06.23

And, if I take and I mix the 2s and the 2p's, and by the Hund rule, if I can come up with four, what have I got?

由洪特规则，如果我把2S和2P轨道混合，如果我们能提供4个轨道，我们已经有什么了？

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