If I make the total energy positive, it's not an ellipse.
如果我让总能量为正，它就不是一个椭圆了。
Renewables will only make up 15 percent of total energy by 2020.
可再生能源在2020年只能达到总需求的15%。
Coal currently provides about 28% of the world's total energy use.
现在全世界能源消耗总量的28%由燃煤提供。
How does total energy affect a reaction rate?
总能量如何影响反应速率？
Oil used to make up 10% of our total energy consumption.
在我们的全部能源消耗量中石油过去一直占10%。
What are the maximum potential energy and the total energy?
最大势能和总能量是多少？
Industry consumes about 32 percent of total energy, and that share is projected to grow.
工业大约耗费全部能源的32%，这个比例预计还会扩大。
As indicated in 1.21, the radiation energy is a very small proportion of the total energy.
正如在1.21中所指出的，在总能量中，辐射能仅占很少的一部分。
Total energy must be conserved.
总能量必须是守恒的。
Total energy must be conserved.
总能量必须是守恒的。
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