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美國(guó)2006年《國(guó)情咨文》中指出，由于美國(guó)經(jīng)濟(jì)目前對(duì)石油過度依賴，必須開發(fā)新的技術(shù)減少對(duì)石油的依賴，因此提出了清潔能源研究的七項(xiàng)設(shè)想，認(rèn)為“美國(guó)目前應(yīng)該用令人難以置信的速度開展這方面的研究�！� 上一頁 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66] [67] [68] 下一頁 |
