净能量是排斥能，和引力能的总和。
The net energy is the sum of the repulsive and the attractive.
因此，什么是净能量呢？
基于生命周期清单分析原理，建立了玉米燃料乙醇的净能量分析方法。
The method of net energy analysis for fuel ethanol from corn was developed based on principles of life cycle inventory(LCI) analysis.
许多悬而未决的问题不仅局限于技术层面，还有其领域中生命周期的影响，特别是净能量平衡。
Many unanswered questions lie not just in the technology, but in the area of life-cycle impact-in particular, its net energy balance.
其中一个能量指标就是生命周期的主要能量余额，或者说是设备将会在使用期内提供多少净能量。
One is the life-cycle primary energy balance, or how much net energy the facility would provide over its lifetime.
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.
ZETA组织说在合适的天气，屋顶的太阳能版能提供整个房子所需的能量——一个所谓的\“零净”能源房。
ZETA says that in the right climate, rooftop solar panels could provide the entire home's power - a so-called "net zero" energy home.
分子轨道对于单个原子轨道来说，我们可以看到的是一个净的能量降低。
What we've seen is we have a net lowering of energy of the molecule versus the individual atoms.
在连续给料外热式回转窑试验台上，以聚乙烯为试验物料进行了热解产气特性、质量平衡以及能量净收益的试验研究。
By the continuous-feeding external-heating rotary kiln, the experimental studies on the gas yield characteristics, mass balance and net energy income of the polyethylene pyrolysis were performed.
各草种单位重能量加权平构值在10H和15H处较大，与林网内净辐射量较大位置相一致。
The average value of unit weight energy is much great at 10H and 15H, that is the position of great net radiation.
根据一定时间间隔的净辐射与降雨量的比可以用来衡量相对于可利用水分的剩余能量，因此该比值也是干旱灾害的度量。
The ratio of net radiation over rainfall for a given period of time is a measure of excess energy relative to available water and is therefore a measure of drought hazard.
用量子化学从头计算法研究了HCN、HNC分子与H原子和电子加成生成的H_2CN自由基异构体的最低总能量构象和净电荷分布。
Using ab initio method, the minimum energy conformations and netcharge distribution have been studied for H_2CN radical isomers formed by addition ofa H atom (or an electron) to HCN (or HNC) molecule.
加大洛杉矶分校研究人员让散射光与来自另一具雷射的能量相遇，以产生建设性的反馈，借此放大光的净振幅。
The u. c. l. a. researchers matched the scattered light with the pump energy from another laser in a way that created constructive feedback resulting in a net amplification of light.
在晴天和阴天大气向土壤的能量传输均维持在净辐射的5%左右，雨天时，土壤热通量为负值。
Soil heat flux from atmosphere to soil is about 5% of net radiation on a clear and cloudy day and soil discharge energy to atmosphere on a rainy day above the same field.
在热介质中，受激的热胶子发射降低部分子的能量，而热吸收增加部分子的能量，其净贡献导致部分子能量损失的减少。
In the thermal medium, the stimulated thermal gluon emission reduces while absorption increases the parton's energy. The net contribution result in a reduction of the parton energy loss.
因此，在配制蛋鸡日粮时，可考虑采用净能标准以期降低日粮能量水平，获得更大的经济效益。
Therefore, net energy system can be used in formulated diets for laying hens to reduce in dietary energy levels, and better improve the economic benefits.
另外，住宅设计采用高端的能量标准，建筑因此另外获得了百分之十的净表皮。
Furthermore, the use of a high energy standard allowed the building to obtain 10% additional net surface, compared to what was requested by the neighborhood plan.
闭合宇宙感应的净负能量与能量密度的两阶导数变化量成正比。
The induced net minus energy of a closed universe equals the density rate of the second time change multiplying a constant.
闭合宇宙感应的净负能量与能量密度的两阶导数变化量成正比。
The induced net minus energy of a closed universe equals the density rate of the second time change multiplying a constant.
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