不过瑕不掩瑜，激光的效率比氙气灯高，因为后者的能量很多以热能的形式散失了。
But that may not matter too much. Lasers are more efficient than xenon lamps, which waste a lot of energy as heat.
玉米燃料乙醇作为化石燃料的替代品，能量效率(净能量或能量比)是评价其可持续性的一个重要标准。
Energy efficiency (net energy gain or energy ratio) of corn-based ethanol as a substitute for fossil fuel is an important criteria for assessing its sustainability.
实验证明在细分圆环状态下，能量效率和平衡性比圆形网络中的节点分布策略都有进一步的提高。
Experiments prove under the "thin" corona state, both the energy efficiency and balance have further raise than that of the distribution strategy in circular network.
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