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Spectrum of energy density 能量密度谱
The observed cosmic energy density is about 10-9 joule per cubic meter, so the universe contains 1072 joules of energy. 由于观测到的宇宙能量密度约为每立方公尺10-9焦耳，所以宇宙所含能量为1072焦耳。
Hadronic interactions showed new characteristics after “knee" of energy spectrum of original cosmic rays. 原初宇宙线能谱“膝”以上能区，强子相互作用显示出新的特征。
The peak value of energy density of rock attenuates exponentially with distance. 岩杆中能量密度峰值随距离以指数形式衰减。
Zheng J P, Huang J, Jow T R.The limitations of energy density for electrochemical capacitor [J].J Electrochem Soc, 1997, 144: 2026. 张丹丹;姚宗干.;大容量高贮能密度电化学电容器的研究进展[J]
The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
Conversion of biomass through pyrolysis to high energy density fuel will relieve the shortage of energy,reduce the pollution of atmosphere and improve the quality of environment. 生物质热解转化为高能量密度的燃料,不仅可以缓解能源的短缺,还可以减少大气污染,改善生态环境。
It is possible to transmute one form of energy into another. 把某种形态的能量改变成另一形态的能量是可能的。
The time-frequency mask method based on the sparseness of the time-frequency spectrum of speech signals provides a new way, but also has the problem of energy loss caused by the 2-value mask. 基于语音信号时频图稀疏性假设的time-frequency mask方法提供了一条新的解决思路，但是同时也存在二值mask带来的能量损失等问题。
Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
There's a wide spectrum of opinions on this problem. 对这个问题的说法众说纷纭，莫衷一是。
The lithium ion batteries with nominal capacity of 10 Ah were studied,and their performances of energy density,discharging at high and low temperature,cycle and resistance were evaluated. 通过对额定容量为10 Ah电池的研究;评价了电池的比能量、高低温放电性能、循环性能及电池内阻等.
As a matter of fact, light is a form of energy. 其实，光是能的一种形式。
There is a wide spectrum of opinions on this question. 在这个问题上有著各种不同的意见。
Who discovered the conservation of energy? 谁发现了能量守恒？
The sun is the ultimate source of energy. 太阳是能量的最基本来源。
The dancers didn't have an ounce of energy left. 舞蹈演员们用尽了体力。
The survey covered a broad spectrum of topics . 这本简史涉及的话题范围很广。
Long ago scientists knew that current was a form of energy. 很久以前科学家就知道电流是能的一种形式。