Casella says only $3.3 million dollars is needed to keep the plane flying to these West African countries until the end of the year.

VOA: standard.2009.08.02

So instead, these would be canceling out wave functions between the two, so we would end up with a nodal plane down the center.

相反，两者之间的,波函数会相互抵消，所以我们在中间会得到一个节面。

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