四面体

By assuming the seeds in the vibration plate were distributed with regular tetrahedron,the influences of seeds lay thickness,n,negative differential pressure,Δp,seeds gap coefficient,λ,nozzle diameter, d_k,on suction force values were analyzed.

在此基础上，通过假设种群在振动种盘内呈正四面体空间分布，分析了种群层数n、负压差Δp、间隙系数λ、吸孔直径d_k对种子受力的影响，揭示振动和负压吸种机理。

Over the pillared saponite by the impulse reaction, while it was only ～4％ for the pillared montmorillonite, indicating that the substitutions in the tetrahedral sheets played an important role in the development of Bronsted acidity of the catalyst.

层柱皂石的异丙苯裂解转化率达到了65％；而层柱蒙脱土的转化率只有4％。这说明层材料的四面体取代对于层柱粘土Bronsted酸位的形成具有重要的决定作用。

Of or based on a system of coordinates.

底面都是平行四面体的棱柱。

The two banana bonds start out from each carbon at roughly the tetrahedral angle.

这两个香蕉键是从每个碳原子以接近四面体角发出的。

Only a fraction of the A ions are in tetrahedral sites.

只有一部分A离子处在四面体的位置上。

New meshing parameters for optimizing the aspect ratio of tetrahedral elements.

新的网格参数，优化四面体的网格长/短比例

The deployable mechanism of a tetrahedral module is discussed.

讨论了四面体单元的展开收拢过程以及单元的工作机理。

A satisfactory theory must be able to explain why in methane the HCH angles all have the characteristic tetrahedral value.

一个完满的理论必须能够解释甲烷中为什么所有HCH角都具有四面体的特性值。

In this method, FEM and BEM decrease the calculation time, and tetrahedral element method can avoid deformation element.

有限元和边界元相结合的方法大大减少了计算工作量和计算时间；模型中采用四面体单元剖分线性单元网格，很好地避免了传统方法中出现的准六面体畸形网格。

To sum up, the imaginative and rational insight, and the imaginative and rational fancy constitute dynamic tetrahedral structure of mind.

综上所述，想象和理性的洞识力与想象和理性的幻想力，形成动态的心灵四面体结构。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了