弗吉尼亚州PV能源系统咨询公司（PV Energy Systems）的保罗‧梅科恪列（Paul Maycock）说，日本的电力很贵，太阳能动力如今已完全能与电网电力等价消费。
In Japan, where electricity is expensive, solar power is now fully cost-competitive with power from the grid, says Paul Maycock of PV Energy Systems, a consultancy based in Virginia.
本文在原有研究结果的基础上，讨论了叙列空间上的弱k级有界变差函数的一致收敛问题，得到了若干有关一致收敛的等价条件。
In this paper, based on -, the uniform convergence of the Kth order weak bounded variation functions on the sequence Spaces were investigated. Some equivalent conditions were also obtained.
本文论述了两列向量组等价的一些充分必要条件，并应用泛函分析的理论进行分析。
In this paper, some necessary and sufficient condition about the equivalence of two column vector groups has been discussed.
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