聚集速度

振幅越大或者磨粒粒径越大，磨粒向中心聚集的速度越快，导致微孔底面出现凹陷状。

The abrasive particles move faster toward the center in the case of larger ultrasonic amplitude or bigger abrasive particles , resulting in concave bottom shape of micro hole .

OLAP查询中，利用好聚簇索引可以大大加快计算聚集函数的速度。要做到这一点可以按数据访问量确定建立聚簇索引时聚簇索引键中列的顺序。

The speed of computing cluster functions can be increased greatly by using the clustered index reasonably during OLAP query , in order to do it , the sequence of clustered index keys can be determined according to the data accessing quantity when the cluster index is building .

我是说，你再聚集后备现金的速度有多快？

I mean , how fast do you build that back up ?

对照组对血小板聚集、脑血流速度无明显影响（P>0.05）。

Platelet aggregation rate and cerebral blood flow velocity in control group were not affected ( P < 0 . 05 ) .

该方法能降低基于粒子滤波的运动目标跟踪方法在迭代一定次数后会出现粒子权重聚集的粒子退化速度。

This method can reduce the weight degradation rate of particle aggregation which occurs in the particle filter moving target tracking method after a certain number of iterations .

另一方面，由于蒙特卡罗方法模拟的随机数是伪随机数，有聚集性、收敛速度慢以及计算量大的缺陷。

On the other hand , because the random that Monte Carlo method simulate is fake random , having gathered feature , slow convergence speed and the defects of the large amount of calculation .

结果表明结扎冠状动脉左室支6h，血小板最大聚集率，最大聚集速度及TXB2均明显升高，且冠状窦与动脉血变化一致；

The results showed that the maximal ascending rate and maximal aggregation of platelet were elevated significantly as well as TXB_2 concentration after 6h of coronary ligation , which were parallel in coronary sinus and artery blood .

冻干复水后的血小板对1U/ml凝血酶的最大聚集率接近于新鲜血小板，但聚集速度比新鲜血小板慢。

The maximum aggregation rate of these platelets to thrombin ( 1 U / ml ) was close to that of fresh platelets , but aggregation speed was more slowly than the fresh ones .

TSCT预先选择、计算和缓存一些聚集视图，并利用这些聚集视图回答聚集查询，从而避免在线计算，大大提高聚集查询的响应速度。

TSCT pre-selects , computes and stores some aggregation views , and uses these views to answer queries in order to avoid the on-line computation and speed up the answering of aggregation queries .