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The poorest children hear just 600 words an hour compared with 2,000 heard by those from better-off families.

最贫穷的孩子听到的话只有600小时，比从质量较好的听说2000富裕家庭。

The results show that compared with traditional table looking up and interpolation method, using BP neural network can achieve a bettor control effect.

从比较的结果可知，BP神经网络的控制效果要优于传统的线性插值法。

Spiral bevel gear and other gear compared with the smooth work, noise and vibration on the merits, and its transmission efficiency can be as high as 99%.

弧齿锥齿轮与其他的齿轮相比，具有工作平稳，噪音和振动小的优点，并且它的传动效率可高达99%。

A recent biannual comparison of human resources management at the top and bottom 10 percent of public companies found almost half of the top companies have a formal HR plan, including recruitment, development, and succession, as compared to less than 5 percent of the bottom firms.

近期的一项每半年进行一次的排在最前列和排在最后的各10%的公共企业的比较研究发现，排在前列的企业中，几乎有一半企业有正规的人力资源规划，包括招募、开发和接续计划，相比之下，排在最后的企业只有5%有这种规划。

And then some ellipses that AUGR estimator is better than the OLS estimator and AUGL estimator is better than the OLS estimator are given, respectively.Second, the definition of the almost unbiased unified biased estimator is proposed. This definition includes the familiar almost unbiased estimators in literatures, and it is the unified expression of the familiar almost unbiased estimators. Followed the biased and variance are compared of AUUB estimator and the unified biased estimator, respectively. AUUB estimator has smaller bias than UB estimator and the variance of AUUB estimator is between the variance of UB estimator and 4 times of the variance of UB estimator. Finally the properties of AUUB estimator are discussed. The conclusion is gained that there are parameters made AUUB estimator is better than OLS estimator in terms of their mean square error. The sufficient and necessary condition that AUUB estimator is admissible is given. The ellipse is given that AUUB estimator is

然后给出了几乎无偏统一有偏估计的定义，该定义包括了文献中常见的几乎无偏估计，实现了常见几乎无偏估计的统一表达式；接下来我们比较了几乎无偏统一有偏估计与统一有偏估计的偏度与方差，得出了几乎无偏统一有偏估计比统一有偏估计有较小的偏度，几乎无偏统一有偏估计的方差介于统一有偏估计的方差与统一有偏估计的方差的四倍之间的结论；最后我们对统一有偏估计的主要性质作了讨论，证明了存在参数K，S使得几乎无偏统一有偏估计在均方误差意义下优于最小二乘估计的结论，给出了几乎无偏统一有偏估计为可容许估计的充要条件，还给出了在均方误差阵意义下几乎无偏统一有偏估计优于最小二乘估计的椭球。

The biaxial and axial bending strength of soda-lime glass are also compared in this paper.

目前通常采用两参数的Weibull函数来描述玻璃等脆性材料的强度分布〔2。

In either case of the typical daily load and weekly load, block bidding and hourly bidding are compared. The results indicate that, in contrast to hourly bidding, block bidding decreases the market payment and improves market efficiency, and the clearing prices are more stable.

以典型日和典型周负荷为例，对分段竞价和分时竞价进行了比较，结果表明，分段竞价降低了市场购电费用，市场效率提高，市场出清价较分时竞价更加平稳。

Nicholas Biddle compared the president's veto biting the bars of his cage.

尼古拉斯 Biddle 比较了咬住他的 cage。的酒吧总统的否决。

According to the electric field intensity,arc current,combining bidimensional heat transfer model,the neutral particle temprature,arc section area and non-equilibrium degree of plasma were calculated and compared with our work.

对实验结果进行了分析和处理，根据测量的电弧电场强度、电弧电流，模拟了中性粒子温度、电弧截面面积和等离子体非平衡度的关系式，与实验结果相符。

Employing the bidimensional regression along with standard deviational ellipse, the authors compared the local and global distortions between two kinds of cognitive maps.

在此基础上，通过二维回归与误差椭圆的方法分别对两种外部化方法获得的结果进行全局与局部的比较，研究发现手绘草图的方法的结果更加符合实际地图；然而两个方法在变形的趋势上却大致相同。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。