Converting one-fifth of Japan's unused farmland to solar would generate 50 gigawatts, he says, which is equivalent to the peak output of TEPCO, Japan's largest electricity firm (and a quasi-monopoly).

他说，若把日本五分之一尚未开垦的农耕地用于日光发电，产生的电量将达到500亿瓦，相当于日本最大的电力公司TEPCO(系一家准垄断企业)的最大发电量。

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We obtain the existence and uniqueness of the classical solution by its equivalent parabolic quasi variational inequality.

利用其等价的抛物拟变分不等式，得到了该问题古典解的存在唯一性。

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Finally, it is pointed out that the directional differentiability is equivalent to the quaSi-differentiability in one-dimensional space.

最后指出了在一维情形下方向可微与拟可微是等价的。

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