双值的

After inducing 1%～16% of the aniseikonia, there is no significant difference between double-screen ATBC and theoretical results. It illustrates that ATBC can reflect the ratio of the image size of the subjects'eyes successfully and it can be applied to clinical examinations as well as experimental studies.

人工诱导屈光参差后，双屏显示计算机不等像检查结果和理论计算值的差异无显著性，两者有很好的相关性，说明该检查能够准确的反映被检者双眼影像的大小，可以用于临床检查及实验研究。

The variability of threshold values for PTC is interesting because its threshold distribution is bimodal.

因为它的阈值分布是双峰的。换句话说，它的敏感性分布于两个相差很大的群组中。

Relying on real good after-sale service,effectively reducing the electively reducing the electricity cost and related cost and related costs of each unit,and hopes to create win-win with cooperating units.

公司凭借真实的节能效果，向客户提供超值的产品和完善的售后服务，有效降低了各单位的用电成本及相关费用，与合作单位共创双赢。

To improve high voltage performance, both mean voltage and instantaneous voltage dual-loop control of is used in this paper, with duty-cycle feed-forward control.

为了改善输出电压的波形质量，该文采用了输出占空比前馈，并结合输出电压的平均值和瞬时值的双环控制方案。

To solve this problem, an algorithm which can adaptively determine the double thresholds based on gradient histogram and minimum interclass variance and improve Canny operator was proposed. Theory and experiments show that the proposed algorithm is effective and correct.

为了对Canny算子的这一缺陷加以改进，提出了基于梯度幅度直方图和类内方差最小化原理自适应地求取双阈值的算法对大津法作出改进，理论推导和实验结果证明了该算法的正确性和有效性。

" Also to those new to strings, this is a note reminding you that all string sorting is lexicographic and not alphabetic the letter "T" comes before the letter "a in the ASCII table.

对 初学者来说还要注意字符串排序使用的是字典序，而不是字母序(字母'T'的ASCII码值要比字母'a'的还要靠前)初学者使用字符串，应该注意是如何把单引号和双引号的使用矛盾和谐掉。

By selecting the urban population data of five years after Chinese reform and opening, use double logarithmic model on the research of the Zipf's law between the cities'size and urban hierarchy. By getting the data of Chinese cities'distribution, analyze the development trends of Chinese cities'distribution Zipf's index with the parametric test, nonparametric test and analysis of variance.

本文通过选取改革开放后5年的中国城市人口数据，运用双对数模型对我国城市规模和城市等级之间的Zipf法则关系进行实证研究，在得到我国各个省份城市规模分布值的基础上综合使用参数检验，非参数检验和方差分析等方法对我国城市规模分布Zipf指数的发展趋势做出分析。

The double～probe pulse echo method, combining the advantages of transmission technique and pulse reflection method, is used to optimize the ultrasonic echo signal amplitude in case of strong attenuation of energy when ultrasonic signal transmitting in solid rocket motor grain.

采用双探头脉冲反射法，综合了穿透法和脉冲反射法的优点，实现了超声信号在固体火箭发动机药柱中传播时能量强衰减的情况下超声回波信号幅值的最优化。

Finite-difference beam propagation method is used to calculate and analyze the influence of different structural parameters on birefringence of holey fiber.

采用有限差分波束传播法计算分析了不同结构参数对多孔光纤双折射的影响，结果表明，调控这些结构参数能在特定的波长窗口获得稳定的拍长，且拍长值也可以根据实际需求设计调整。

One is Bardina vorticity modification, and the other is Richardson number modification. Prediction results show that Bardina method has a superior capacity to Richardson number modification. Since DSM model has improved predictive results of the reversed velocity and tangential velocity, it is a potential method to predict strong swirling nonisotropic turbulent flow in stead of the longer convergence time.

本文采用了基于旋转体系使湍流脉动加强和削弱两种作用的修正方法对k-ε双方程的湍流耗散率方程进行修正，计算结果表明，从旋转体系可使湍流能量加强出发的Bardina涡量修正方法，预报回流区范围缩小，更加接近于试验值，其计算结果优于使湍流脉动削弱的Richardson修正。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。