查询词典 discrete group

Based on the discrete logarithm,this paper proposes a group signature schemes.

基于离散对数给出了一种组签字方案。

After rigorously mathematical deduction, some valuable conclusions are drawn: at the multiple times of symbol period, discrete peaks of the PACA function appear with 3 peaks in group, which includes a larger peak located in the middle and the other smaller two located symmetricly beside the larger one. The distance between small peaks is modulation offset of pulse position PPM.

经过严格数学推导，指出了TH-UWB信号的PACA函数不但在字符周期整数倍处出现离散峰值，而且按三个峰值(一大峰值左右对称出现小峰值)成对出现，大峰和小峰的间隔就是PPM调制时间偏移。

We note that any pure elliptic subgroup ofI somis discrete if and only if G is finite group.

最后，我们引入了一种广义非初等群，发现〓变换群经典的离散准则对我们研究的非初等群只是有条件成立，我们找到了充要条件对其建立了离散准则。

Next,similar to the studies of Friedland-Hersonsky inequalities in norm form and Martininequalities for discrete groups of 〓,we establish 〓 type inequalitiesfor subgroups of unitary transformation group U(1,n,C)in complex hyperbolicspace 〓 and we also give several 〓 type inequalities in the form of fgfg〓for the norm algebra 〓 in C.

其次，我们对复双曲空间〓上的酉变换群U(1，n，C)的子群建立了〓型不等式，推广了Martin的相应结果。最后，我们对复数域C上的范数代数〓建立了形如〓的〓型不等式，推广了Friedland-Hersonsky不等式。

Rectangular and unstructured hybrid grids, re-normalization group k-ε turbulence model and discrete ordinates radiation model were adopt for the steady-state numerical calculation of air velocity filed and temperature filed, and obtained the distribution of air flow velocity and temperature in the passenger compartment.

采用矩形与非结构混合网格、RNGκ-ε两方程湍流模型、DO辐射模型对车室内的空气速度场及温度场进行了稳态数值模拟计算，获得了车室内空气流速及温度的分布情况。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。