预先指定的

Partition-based method is a practical cluster way to cluster data set, but the efficiency of this method is strongly depend on the pre-known knowledge, especially it is necessary for this method to give the clusters number in advance.

基于划分的方法是聚类分析中较为主要的方法之一，但是由于它对于先验知识的依赖较强，尤其是需要预先指定聚类分析的类别数目，给该方法的应用带来了障碍。

Then this paper makes a deep analysis on the HWMP proposed in 802.11s, points out some defects in root selection and proactive tree generation and makes improvements as follows: it proposes a distributed root selection algorithm to improve the simple direct configuration of root in the draft; it also proposes a ETX-based proactive tree generation algorithm to improve the simple minimal spanning tree based on hop count in the draft.

接着本文选取802.11s草案中提出的HWMP协议进行了深入分析，指出了该协议在根节点选取算法和预先树生成算法中的不足，分别对其做出了改进：提出的分布式根节点选取算法对草案中简单的直接指定根节点做出了改进；提出的基于ETX路由权值的预先树生成算法对草案中简单的基于最小跳数的预先树生成算法做出了改进。

You can optionally assign pre-recorded sounds to be played for specified callers.

您可以选择性地分配预先录制的声音将要发挥的指定来电。

Call option:Option to purchase designated securities at a predetermine d price within a specified time limit.

买入期权；购买期货权：指在限定的时间内，按预先确定的价格购买指定证券的选择权。

Two of the reasons it seems impossible to prestate such preadaptations are these: How would we prespecify all possible selective environments?

似乎不可能预先陈述这些预适应的原因有两个：我们如何才能指定所有可能的选择环境？

Two of the reasons it seems impossible to prestate such preadaptations are these: How would we prespecify all possible selective environments?

关于似乎预先陈述这些预适应是不可能的有两个原因：我们如何才能指定所有可能的选择环境？

Z To cause to assemble or to assemble at a prearranged time and place.

在指定的地点集合：使在预先约定的时间和地点集结

Q: In a match, the two players agree in advance to concede all putts within a specified length.

问：在比洞赛中，两名球员同意预先承认所有的在指定长度内的推杆。

This paper mainly deals with distribution of primitive polynomials and primitive elements over finite fields. LetFq be a finite field of q elements with characteristic p , xn + a1xn-1 +...+ an-1x + an be a polynomial over Fq .

本文主要研究有限域上本原多项式及本原元的分布，设F_q表示有q个元素的有限域，q为素数的方幂，F_q是F_q的多项式环，文献[10][11]中证明在F_q上，存在可预先指定a_1，a_2的n≥7次本原多项式。

Caesar had already arranged his winter quarters on the Danube, and had brought up his army to within five days' march of the advanced posts of the enemy; and the legions which he had ordered Saturninus to bring up, separated from the enemy by an almost equal distance, were on the point of effecting a junction with Caesar at a predetermined rendezvous within a few days, when all Pannonia, grown arrogant through the blessings of a long peace and now at the maturity of her power, suddenly took up arms, bringing Dalmatia and all the races of that region into her alliance.

凯撒已将多瑙河畔的冬营部署妥当，挥军进至据敌军最后的目标仅仅五日行程之地，而森提乌斯·萨土恩尼乌斯受命所率诸军团距敌军差不多也是同等距离，不日之内将与凯撒在一预先指定之地点会师。

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。