性选择的

And so, the genetic progress of reproductive traits only depended on crossbreeding in the past years.

传统的数量遗传学在指导家畜育种中起到了重要的作用，但是繁殖性状遗传力低、性状表现晚、而且是限性遗传，通过常规选择难以有所进展。

In resent years, fiber-reinforced composite post and composite resin core is a new choice in the post crown restoration. It has high strength and good translucency, and good to protect the root as well.

近年来出现的纤维树脂桩核材料因具有强度高、弹性模量与牙体组织接近，有利于保护牙根、透光性好、不影响核磁共振成像等优点为桩冠修复提供了新的材料选择。

It fatally suggests that there are only two alternatives : to consider the mental condition of the accused only to find moral culpability or not to consider it at all .

它不可避免地暗示，只有两种选择：仅仅是为了查明道德上的可责性才考虑被告人的精神状况，或者根本不考虑它。

In this paper, the degree of freedom is explicitly expressed as free parameters in form.

现将这一自由度明确地表示为自由参数的形式，并利用优化算法选择这些参数，增强闭环系统的鲁棒性。

The proton exchange membrane, a selective passable membrane, its working is transferring protons, parting oxidant and deoxidant, is the core of the cell.

质子交换膜是PEMFC的核心组成，是一种选择透过性膜，主要起传导质子、分割氧化剂与还原剂的作用。

In reality, fashion is now more about the availability of a gazillion simultaneous choices rather than the single, old-school designer diktat.

在现实中，时装，现在更多关于可用性的一个gazillion同时选择，而非单一的，旧学校设计师发号施令。

"One reason to choose angioplasty and stenting is if patients just prefer not to get very aggressive surgery that will discommode them for many months," he says.

"有些病人选择支架而不是创伤性的手术是因为害怕后者带所来的数月之久生活不便，"他说。

If two or more replacement effects would apply to a card-drawing event, the player who's drawing the card chooses what order to apply them.

如果两个或更多替代性效应将对某个抓牌事件生效，则由将要抓牌的牌手选择它们生效的顺序。

All the strains isolated from the patients are capable of producing toxin which are related to its pathogenictity and epidemicity.

从所有病人中分离到的菌株均为产毒株，与致病性和流行强度有关，治疗霍乱病人应结合本地区情况，根据不同菌型选择相应的抗生素药物。

Considering the multiplicity of existing and potential natural gas source in Shenzhen City , gas exchangeability , natural gas category and gas appliance adaptability , the selection of reference natural gas in Shenzhen City is discussed.

考虑深圳市目前及潜在天然气气源的多样性、燃气互换性、天然气类别及燃具适应性，对深圳市天然气基准气的选择进行了探讨。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。