查询词典 massless

A hypothetical massless,neutral elementary particle believed to mediate the strong interaction that binds quarks together.

胶子假设的无质量的中性基本粒子之一，被认为能传递一种把夸克结合在一起的强大的相互作用力量

In effect, bodies are assumed rigid and treated as point massed; sprigs are massless and electrical leads resistanceless, suitable corrections are made to the system mass or resistance; temperature are uniform; etc.

在效果上，物体被假设为是刚体并且质量都集中在一点上，弹簧的质量可以忽略；导线的电阻为零；或者是可以得到合适的关系式使得系统的质量、电阻和温度的分布是均匀的。

Graphene has become a model system in condensed matter physics because its charge-carrying particles move at relativistic speeds, in effect behaving as if they are massless.

Graphene已经成为凝聚态物理学中的一个模型体系，因为其带电荷的粒子能以相对论速度运动，从效果来看，其行为就好像它们没有质量一样。

In addition,for both the cases of a uniformly accelerated two-level atom interacting with a quantized real massless scalar field and a uniformly accelerated multilevel atom interacting with a quantized electromagnetic field,we calculate the rate of change of the mean atomic energy from the point of view of a coaccelerated frame.

另外，对于匀加速的两能级原子与无质量的量子实标量场相互作用以及多能级原子与量子电磁场相互作用的情况，我们还在一个共同加速的框架下计算了原子的平均能量变化率。

From the point of practice, the massless foundation model is applied for problem of the dam--foundation interaction. The regularity of the natural frequencies of the dam varying with the boundary size of the foundation is studied under various foundation conditions, and then the rational foundation size is decided.

从实用的角度出发，利用无质量弹性地基模型分析坝—地基相互作用问题，研究了不同地基情况下重力坝自振频率随地基边界范围变化的规律，确定了合理的地基边界范围，并分析了相互作用对坝体振型的影响。

In chapter 2,Using the Rindler approximation we compute the entropiesdue to the quantum fields near the horizon,including massless scalar fieldand Dirac field.

其次在第二章里，我们利用Rindler近似计算了黑洞附近量子场的熵，包括零质量的标量场和Dirac场。

With the coherent-state representation, the behavior of a massless, scalar field ф in the two-dimension Schwarzschild spacetime was discussed.

在二维弯曲时空引入相干态，并利用此相干态表示，研究了二维Schwarzschild时空中的无质量标量场的性质和渐近行为。

The computational results show that the assumptions of incompressible water and massless foundation can considerably simplify the complexity of equations and cut the amount of computation, but cause little errors.

计算结果分析表明：在高拱坝流固耦合动力分析中，水体不可压缩和无质量地基假定可显著地消减方程复杂度和计算工作量，但带来的数值误差较小。

An all - pervading,infinitely elastic,massless medium formerly postulated as the medium of propagation of electromagnetic waves.

大体上达到人均四千美元，做到这一步，中国就达到中等发达的水平。

Considering the background of massless neutrino,probes into the effect of the background field on the gravitational field of a global cosmic string outside the core.

考虑静质量为零的中微子背景，探讨背景场对整体宇宙弦核外引力场的影响。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。