求解一句话句子结构。。。 in terms of physics,the characteristic feather of the rollor coaster is that the potencial energy of the cars,gained as a chain drive lifts them through the earth's gravity to the top of the first drop,has been converted to kinetic energy by the time the ride ends.
求解一句话句子结构。。。 in terms of physics,the characteristic feather（主语） of the rollor coaster is thatthe potencial energy （从句主语）of the cars,后面是定potential energy 的一个句子，描述potential energy的如何形成（gained as a chain drive lifts them through the earth's gravity to the top of the first drop）,has been converted to kinetic energy by the time the ride ends.
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发表于 2011-2-22 23:48:53
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