查询词典 natural selection

The genetic algorithm is a kind of self-adapting optimization method based on the mechanics of natural selection and evolution.

本文在总结常用的电力系统无功电压优化方法的基础上，建立了以网损、电压质量和无功潮流分布为目标函数的数学模型。

He clearly saw, however, the full force of the principle of natural selection.

无论怎样说，他已清楚地看到了自然选择原理的十足力量。

ABSTRACT Evolutionary algorithm is a new adaptive search method based on principle of natural selection, which is an intersect subject and ...

进化算法是基于自然选择原理的一种全新的自适应搜索算法，是生命科学与工程科学的交叉学科，也是计算机科学和系统优化领域的热点研究课题。

Fire-resistant materials in the future will be mainly of high-purity, natural selection and artificial and synthetic.

未来耐火原料将以高纯为主，天然精选和人工合成并用。

Inherited behavioral traits have been honed by natural selection.

通过继承得到的行为性状已经经过自然选择的练就。

In fact, geneticists have known for a long time that natural selection does not always have an opportunity to work perfectly.

事实上，遗传学家们很久以前就已经知道，自然选择并非总是有机会很理想地发生作用的。

Discoveries of early geneticists were difficult to reconcile with gradual evolution and the mechanism of natural selection.

早期遗传学家的发现难以用逐步进化和自然选择机制解释。

Paediatricians suspect some are killed in infancy—not Darwin's natural selection but the dispensing of an extra mouth to feed.

儿科医生猜测也许有些孩子早在婴儿时就被杀死了——这并非达尔文的自然选择理论，而是为了减少一张吃饭的嘴。

Genetic changes by chromosomal rearrangements provide the variation among species and lead to natural selection during the process of evolution.

在物种演化的过程当中，可能因为基因序列的重新排列而造成个体间不同的差异产生，进而推动了物种天择。

Changes in allelefrequencies brought about by mutation ,genetic drift ,gene flow,and natural selection.

又称种内进化，是由突变，遗传漂变，基因流和自然选择导致的等位基因频率的改变。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。