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First we compare rough sets and random sets,and derive the relationship between belief function and lower probability.

首先将粗糙集与随机集作了比较，并由此得出了信任函数与下概率的关系。

The"not escaped"pulsars of each group whose simulated projective places on to the Galactic plane lie in the range 0＜r＜25 kpc and 5＜r＜11 kpc from the Galactic center respectively are selected to make statistics on absolute height |z| distribution to derive the segmental scale height and the cumulative scale height.

对每组中"未逃逸"脉冲星，分别在0＜r＜25kpc和5＜r＜11 kpc两个区域中对|z|分布做了统计，研究了"未逃逸"脉冲星在这两个区域中的分段标高和累积标高的演化特征。

Measures to identify and proscribe acts of harassment derive from the Sex Discrimination Act, the Race Relations Act and the law of assault.

识别和禁止骚扰行为的措施出自性别歧视、种族关系法案及防止攻击法案。

In order to derive the qq-qq interaction, we generalize the Fierz transformation from SU(N ≤4) scalar and pseudo scalar to SU tensor and point out that the qq — qq interaction may be useful in an extended quark potential model calculation.

为了得到三体夸克-夸克对之间的相互作用，我们将著名的Fierz变换从SU(N＜4)的标量和赝标量推广到任意的SU张量。

In order to derive the 〓 interaction, wegeneralize the Fierz transformation from SU(N ≤ 4) scalar and pseudoscalar to SU tensor and point out that the 〓 interaction may beuseful in an extended quark potential model calculation.

为了理解在重子中存在着的自旋-轨道力的压抑，我们用微扰QCD的方法推导了四阶夸克-夸克之间的相互作用，并提出了用费曼图技术去计算非协变的含时微扰图的方法。

Assuming that the stratons are heavy and the interaction isdominantly a pseudoscalar potential and a static vector potential,we derive the SU(4)mass splitting for mesons.

在层子质量很重的假定下，考虑相互作用是赝标势和静矢势为主，导出了介子 SU(4)质量分裂公式。

Review our previous work on formally derive the chiral Lagrangian of low lying Octet pseudoscalar mesons from the first principles of QCD.

本文首先以QCD为背景，介绍了Gasser-Leutwyler的手征拉氏量理论，然后回顾了从QCD出发形式推导赝标介子手征拉氏量的工作。

The basic steps of this method are as follows.The firststep is to derive a necessary condition such that the families of quasipolynomials withone parameter,corresponding to the edges of the polytope,have pure imaginary rootsby using the Dixon's resultant for polynomials.Then to check that the casescorresponding to the parameters obtained in the first step are in fact impossible byusing the generalized Sturm criterion and some stability criteria.

其基本思路是先利用多项式方程组的Dixon结式理论导出使各棱边对应的单参数特征拟多项式有纯虚根时，参数值应满足的一个等式条件，即所谓的Dixon结式等于零，然后由广义Sturm判别法验证对所有参数值，Dixon结式不等于零，或使结式等于零的解不产生特征拟多项式的纯虚根。

Needle could derive a signal from either the ADF receiver or the Nav 1 receiver selectable through either a rotating or a push-button selector switch at the bottom left corner of the RMI.

可以通过操作位于RMI左下角的旋转式或按压式选择器电门，自由选择从ADF接收机还是Nav 1接收机的任何一方得到信号。

Needle could derive a signal from either the same ADF receiver or the Nav 2 receiver selectable through either a rotating or a push-button selector switch at the bottom right corner of the RMI.

可以通过操作位于RMI右下角的旋转式或按压式选择器电门，自由选择从ADF接收机还是Nav 1接收机的任何一方得到信号。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。