繁殖

And we say art because the breeding of the Neapolitan Mastiff is truly an art.

培育工作也为这一物种的繁殖起到了重大作用。

The nematodes cultured by this method can be used as biological and genetic studies of nematode.

该方法繁殖的线虫可用于线虫的生物学和遗传学等方面的研究。

Specimens were examined by histological method to determine the cycle of the gonad development of this nemertean. The results showed that: The sex ratio (female: male) was about 1: 1. The sizes of mature males and females were not significantly different; females are rosy in colour and males are white, largely owing to the metamerically arranged gonads. Gonads, which were not detected in samples of autumn months, arose in December, but sexes were indistinguishable until middle January.

结果表明：扁额原细首纽虫雌雄比例约为1：1；雌雄体长、体重无显著差异；性成熟雌体通常体壁呈玫瑰红色，雄体呈白色，非繁殖季节雌雄体色无明显差异；一年有两次性腺发育，第一次12月开始出现性腺，1月可辨雌雄，3月15日达到第一次性腺发育高峰，4月15日性腺消失；第二次于4～5月开始出现性腺，6月15～30日达到高峰，9～10月性腺消失。

Tracing the development process (i.e. the life history) of vacuum cleaner, we found similarities between product development and evolution trend, such as the theory of "evolve by use and degenerate by no-use" by Lamarck, the theories of mutation, excessive breeding, competition for existence, and survival of the fittest in the Theory of Natural Selection by Darwin and Wallace, as well as the theory of mutation in Neo-Darwinism.

文中经由观察吸尘器诞生后的发展过程，亦即它所经历的生命史中，归纳出它所显现的演变现象有些似乎和演化论有相似之处，例如：Lamarck的用进废退演化现象，Darwin天择说中的变异、过度繁殖、生存竞争、适者生存等，及集合各家说法的Neo-Darwinism中的突变等。

Because 3 months less than has breed,this is fetal the capacity that still does not have synthetic interferon, boycott the infection of nettle rash virus hard, virus of measles of as a result breeds in great quantities, block sluggish segmentation, the become divided of cloggy organization, form deformation thereby, if harelipped, palate is raided, small head, cataract, congenital obstacle of growth of deaf-mute, bone.

这是因为孕育3个月以内有胎儿尚不具备合成干扰素的能力，难以抵制风疹病毒的感染，以致风疹病毒大量繁殖，阻滞细胞分裂，妨碍组织的分化，从而形成畸形，如兔唇、腭袭、小头、白内障、先天性聋哑、骨发育障碍等。

Eggs of Black-crowned Night Heron and Little Egret were sampled in May of 2005 from Yingshang Balihe Reserve, Anhni Province. Residues of Cd, Pb and Cr were determined by atomic absorption spectrophotometer analysis.

2005年5月，采集了淮河地区颍上八里河集群繁殖的夜鹭和小白鹭鸟卵共18枚，用原子吸收法测定了卵壳、内容物中重金属Cd、Pb、Cr的残留量。

During the tissue culture of H.macrophylla 'Nikko Blue', the disinfection of shoot tip and environment was very important.

结论］在"尼克兰"的组培繁殖中，重要的是注意茎尖和环境的消毒。

A noncellular biological entity that can reproduce only within a host cell.

病毒 一种能在寄主细胞中自我复制或繁殖的生物单体。

Single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants.

单细胞或无细胞的球状或螺旋状或棒状的缺乏叶绿素的有机体；通过分裂繁殖；和病原体一样对生物化学很重要；很难分类；通常被认为是植物。

However, in recent years the output and quality of sea pearls declined greatly owing to inbreeding and nondirectional maniputaion in breeding practice.

但近年来，由于育种过程中近亲繁殖、盲目操作，造成贝体渐小，优珠率下降。

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。