性选择的

We give a group of circular filter functions, use genetic algorithm to select the frequency bands of larger divisibility value and to estimate the parameters of circular filter functions, and design the expression of chromosome and the function of fitness.

给出了一组圆形滤波函数，并使用遗传算法来选择可分性较大的频段和进行圆形滤波函数的参数估计，设计了染色体的表示方式和适应度函数。

When and we show that system (1) has the cusp bifurcation of codimension 2(ie,Bogdanov-Takens bifurcation); when ,we show that this system has the cusp bifurcation with codimension at least S.

而且我们选择了系统的原参数中的二个作为分支参数，可以使系统(1)进行Bogdanov-Takens余维2普适开折，从而证明系统(1)同宿轨的存在性。

This paper discuss the mechanism and process of making emulsive moistureproof dope for corrugated board with scrap polystyrene foam by selecting proper commix impregnant and emulsion .

本文叙述了以废弃的聚苯乙烯泡沫塑料为原料，选择合适的混合溶剂和乳化剂制取水乳性瓦楞纸箱防潮涂料的机理及过程。

There are problems such as ethnics and compliableness associated with the use of a placebo control group, but the placebo control group can overcome the problems above. Therefore, it is necessary to use placebo reasonably in RCTs within the permission of ethnics.

虽然安慰剂对照仍存在伦理学和依从性的问题，但可以克服以上困难，得出更为科学的结论，所以，在中药临床试验中，应该在伦理学所能认可的最大限度内，最大可能并灵活地选择安慰剂对照。

The composite membranes have strong recognition function and selective permeation. PSF is only as sustaining membrane and has little effect.

共混分子识别膜有较好的机械强度和选择透过性，聚砜只起到了支撑膜的作用，对印迹聚合物的识别能力影响很小。

His choice of copperplate and his new treatment of themes of traditional Chinese culture are a sign of his deep thinking and vigorous efforts in the period of transition.

他对于铜版画的选择，乃至于他对中国文化主题的当代性呈现，都体现了他对于这种转型的自觉思考与积极构建。

The disquisition brings forward three principle in combination arithmetic designing and combination arithmetic choice. There is currency, countability and less information redundancy. And the disquisition analyses the relation of them.

本文提出了在组合算法设计和组合算法选择方面所应当遵循的三个原则，即通用性、可计算性和较少的信息冗余量，并初步分析了它们之间的相互关系。

Methods A total of 430 eyes in 251 cases of diabetic focal macular edema, diffuse edema and cystoid edema were treated with krypton yellow laser photocoagulation.

目前激光光凝术已成为治疗糖尿病性黄斑水肿的常用方法，但激光参数的选择是临床治疗十分重要而又难统一的问题。

This is a fictitious work that draws viewers into a city that is vast and devoid of all feelings.

画面的选择和关系性的搭配，表达了他对社会问题的关系和价值判断。

The alternative is to remain in your present dimension, and continue to experience in a cycle of duality.

另一种选择就是保持你现在的生活状态，而继续你的二元性的周期循环。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。