针对有效数相加问题，本文提出了三输入加法树的设计方法，并就其性能作了简要的分析。
In order to deal with the significant digits addition we designed three inputs adder tree, and give a simple performance discuss of this method.
引进了有效数密度的概念，对玻色-爱因斯坦凝聚（BEC）在球谐势阱中理想玻色气体的临界温度进行探讨。
The paper introduces the concept of significant density and explores the critical temperature of Bose-Einstein condense(BEC) in the ball harmony potential well in the ideal Bose gas.
杀菌剂拯救了不计其数的生命，它们在攻击处于悬浮状态下的单个细胞最为有效。
ANTISEPTICS have saved countless lives, but they are most effective when the bacteria they are attacking are individual cells in suspension.
好消息是现在已有数种有效的治疗方法问世，而且大部分患者在最初数周的治疗后即会有所好转。
The good news is that there are several effective treatments available to fight depression, and that most sufferers begin feeling better within several weeks of beginning therapy.
算法采用自然数编码，自适应的交叉变异算子，并融入启发式信息有效地提高了搜索效率。
It introduces the natural number coding method, adaptive probabilities of crossover and mutation, and furthermore, makes use of heuristic information to improve search efficiency effectively.
在保持现有组合的千粒重的基础上，增加每穗实粒数是提高早杂组合产量的有效途径。
On the basis of maintaining 1000-grain weight of the present combinations, increasing filled grains per panicle was an effective approach to elevating the yield of hybrid early rice.
应用盒子维法对改造后的灰度图像提取分形维数，计算结果表明该方法非常有效的表征了工件表面质量状况。
And gets the fractal dimension from the processed gray image by using method of box dimension, the calculation result indicates that it effectively represents the quality of the workpiece surface.
本文的研究样本来自大连地区的几家软件公司，问卷调查共收集到问卷287份，有效问卷数为280份。
The research date is collected from some software enterprises in Dalian. 287 questionaires are handed out, and 280 valid samples are collected.
结果表明，密度和施氮量对有效花朵数的影响达到极显著水平，其交互作用效应也达到显著水平。
The results showed as follows. The effect of density and nitrogen on effective flower numbers reached very significant level, and their interaction reached significant level.
单株有效花球数对单株花产量的直接效应最大，其次为顶花球直径。
The direct effect of number of effective cones per plant was the strongest, followed by diameter of primary head.
抛栽密度与有效穗数、稻谷产量呈正相关。
There existed positive correlation between scatteredtransplanting density and effective panicle number and grain yield.
模糊粗糙集理论是解决数据集维数问题的有效工具，但基于模糊粗糙集的降维算法还不多。
Fuzzy rough set theory is an effective tool for reduction of data dimension, but there are few dimension reduction algorithms that are based on fuzzy rough set theory so far.
在文本分类中，有效的维数约简可以提高学习任务的效率和分类性能。
Effective dimensionality reduction could make the learning task more efficient and more accurate in text classification.
在低速和高速情况下，分别得到了有效电荷数和电子阻止本领的解析表示式。
In the case of low and high velocities, the analytical expressions of the electronic stopping power and the effective charge are obtained, respectively.
并提出了针对不同类簇判断有效降维维数的模型选择准则。
The model selection principle of determining effective number of dimensionality reduction for different clusters is proposed.
在自动文本分类系统中，特征选择是有效降低文本向量维数的一种方法。
Feature selection is a valid method to reduce the dimension of text vector in automatic text categorization system.
在降低图像解析度的基础上使用神经网络来进行特征压缩，可以有效地降低特征维数。
Based on resolution reduction, neural network is then utilized for feature compression, which can effectively reduce the dimension of features.
结果表明：木材内部孔隙度的分形维数是定量反映干燥过程中木材内部孔隙复杂程度新的有效指标。
The results showed that the fractal dimension is an effective index to quantitatively characterize the complexity of wood interior porosity during the drying process.
算法实例表明，改进后的拉格朗日松弛算法迭代步数显著减少，证明算法是有效的。
Computational examples show that the modified subgradient optimization algorithm for Lagrangean relaxation can reduce the iterative steps obviously, and is proved to be efficient.
而叶片的长度、宽度、有效叶数及茎围，都与产量呈正相关，只有节间距与产量呈负相关。
The leaf length, leaf width, number of productive leaves and stem thickness were positively correlated with yield whereas the internodal length only was negatively correlated with yield.
静电纺丝(电纺)技术是一种制备直径为数十纳米到数微米的纳米纤维的有效方法。
Electrospinning is one of methods to produce effectively nanofibers with diameter ranging from several nanometers to several microns.
在高级搜索中的显示结果数必须是一个大于0的有效整数。
Number of results to display in Advanced Search must be a valid integer greater than 0.
提出了应用试验手段选择强夯击数、夯点间距及有效影响深度等强夯参数的方法。
A method to choose the number of DC, the spacing of DC, the effective influence depth and other parameters through the experiment is presented.
强耦合极化子的振动频率和声子平均数随有效受限长度的减小而迅速增大。
The Vibration frequency and the mean number of phonon of the strong coupling polaron in parabolic quantum wires will strongly increase with decreasing the effective confinement length.
间距最大化特征选择技术是一种有效的维数约减技术，一般是基于加权技术和相似性度量构造目标函数。
Margin maximization feature weighting is an effective dimension reduction technique, and it is generally based on weighting techniques and similarity measure to construct their objective functions.
分形网格维数诊断方法能有效地诊断齿轮局部故障，具有广泛的应用前景。
The testing results indicate that this method can accurately diagnose the local fault of gear and has extensive application foreground.
实测数据处理结果表明，该方法能有效地解决拟合效果和多项式阶数之间的矛盾。
Results based on practical measurements show that the proposed technique can effectively resolve the conflict between fitting effects and the polynomial order.
在有效的数据库文件上运行它，类似清单4中的倒数第二个命令，则会提供文件中的记录数。
Running it on a valid database file, like the penultimate command in Listing 4, gives a count of the records in the file.
在有效的数据库文件上运行它，类似清单4中的倒数第二个命令，则会提供文件中的记录数。
Running it on a valid database file, like the penultimate command in Listing 4, gives a count of the records in the file.
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