次数

Progression made through the course and class frequency is based on the individual circumstances of each student.

本课程共16个阶段，每个阶段需要20至30次课，可根据学员的特点和进步情况配备对应的课堂次数。

After implementing strategies, including re-screening participation subjects, changes in care procedures for newborns, reinforcement in advertisement, using individual telephone contact, increase the frequency of invitation, and adjustment the holding time and frequency of postpartum class, the participation rate increased from 28.9% to 82.4% at the first time of evaluation, to 100% at the second time of evaluation.

经实施重新评估参加的对象、更改新生儿照顾方式、加强海报宣传、电话个别通知、增加邀请次数及调整妈妈教室举办时间与频率等解决办法后，参与率已由实施前的28.9%提升至第一次评值之82.4%；第二次评值之100%，达本专案目的。

Meanwhile, it could be seen that there does not exist a confidence interval with width less than 0.5 because of the property of Poisson distribution. Based on these conditions, the author mainly carried out research into two aspects of this problem as follows. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example,"exact" confidence interval, Wald confidence interval and Bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed .Also, several better confidence intervals such asare also presented .Secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two-stage interval estimate procedures. At the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. The numerical computation shows that the method considered in this dissertation have good properties and applied value.

同时，由于Poisson分布的特性，我们知道不存在其参数区间长度小于0.5的置信区间，基于这些情况，我们主要展开了以下两个方面的研究：一是利用数值计算分析与理论分析的方法对现有的若干置信区间如"精确"置信区间，Wald置信区间，Bayes置信区间等进行分析比较，发现了一些缺陷，针对这些缺陷，我们进行适当的修正，并得到几种性质较好的置信区间如：修正大样本区间Jeffreys原则下置信区间二是针对已给定的置信系数与区间长度，我们提出了一种渐近的两阶段区间估计程序，并利用数值计算的方法，在各种置信系数与区间长度限定下，算出了最优的第一阶段观测次数，大量数据表明，本文考虑的方法性态良好，具有应用价值。

Of mail of clew of the meeting on the webpage when be being read can read a number.

在阅读时网页上会提示邮件的可阅读次数。

With the numbers studied, no significant relationships were found between recurrence and the severity at presentation, the time of presentation, the number of casts needed to obtain correction, ethnicity, or a family history of clubfoot.

通过研究所得的数据，我们没有发现复发与症状的严重程度、症状的持续时间、需要矫正所做处理的次数、种族以及畸形足的家族史有明显的关联。

With the numbers studied, no significant relationships were found between recurrence and the seerity at presentation, the time of presentation, the number of casts needed to obtain correction, ethnicity, or a family history of clubfoot.

通过研究所得的数据，我们没有发现复发与症状的严重程度、症状的持续时间、需要矫正所做处理的次数、种族以及畸形足的家族史有明显的关联。

Recurrence, defined as the need for any subsequent operatie treatment, was analyzed with respect to the seerity at presentation, the time of presentation, the number of casts needed to obtain the initial correction, any family history of clubfoot, ethnicity, and the compliance with postcorrection abduction bracing.

我们仔细分析了作为需要接受另外手术处理的标志的复发情况，主要包括症状出现的严重情况、症状出现的时间、达到初始矫正疗效的处理的次数、畸形足的家族史、种族倾向以及矫正后的伸展器械使用情况等几个方面。

The molecular weight dependence of the distribfition of polymer molecules between the coacervate and the dilute phases on the phase separation of polymethylmethacrylate-acetone-methanol system has been proved to follow the relation first derived by Flory for binary systems: f"_j/f′_j = Qe~_j where f"_j and f′_j are the weight fractions of the polymer molecules of molecular weight M_j in the coacervate and in the dilute phases respectively, while Q and σ are parameters.

1。聚甲基丙烯酸甲酯-丙酮-甲醇体系的两次分相实验用θ-溶剂中的沉降速度法测定分相前试样和浓相的分子量分布曲线，得到高分子在浓稀相重量分配的分子量依赖关系 f_j=Qe~证实Flory的溶度函数形式与实际相符，并适用于三元体系的相分离，但Q值与两相体积比R值并不相同。 2。再分级使级分的分子量分布宽度随再分级次数的增加而减小，通常认为到第三次再分级其效果已不显著并不确实。

Methods The suckling Balb/c mouse heart tissues were obtained and digested with trypsin and coagulase Ⅱ. The effects of digestion procedures on the primary cultivation of suckling Balb/c mouse myocardial cells had been compared.

取乳鼠心脏，采用胰酶和胶原酶Ⅱ消化方法分离乳鼠心肌细胞，比较消化次数和消化时间对原代乳鼠心肌细胞培养的影响。

Extracting technical conditions of carminic acid from cochineal was examined in this paper, and effects of pH, concentration, extracting times, extracting temperature, extracting time, and particle size of raw material on the yield of carminic acid were investigated.

笔者研究了从胭脂虫中提取胭脂红酸的工艺，探讨了浸提液pH、浓度、浸提次数、浸提温度、浸提时间、原料颗粒度、料液比等对胭脂红酸得率的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。