查询词典 fertility

The F2 nullisomic amphidiploid with low chromosome number (2n=44-49) wasaccompanied with abnormal meiosis (7.45 Ⅰ+ 19.50 Ⅱ), but its fertility (19.2%) wasmuch higher than 〓's.

F2非整倍体的染色体数较低(2n=44-49)。

The effect of azotobacter fertilizer on living activity, soil fertility, yield, total nutrient and crop quantity is studied at the different level of using nitrogen .in the calciform soil by the rape potted plant biology analogue experiment, in order that the best scope of valid applying azotobacter fertilizer is determined. It can offer theoretic basis for searching ways of biology controlling to high yields and qualities, optimization directions for products of special compound fertilizer and valid using.

本文通过油菜盆栽生物模拟试验，研究了在不同施氮水平下，石灰性土壤上固氮菌肥料对土壤微生物活性，养分以及油菜的生物产量、全量养分和品质的影响，旨在确定固氮菌肥料有效应用的最佳土壤氮素范围，为探求油菜作物高产优质的生物调控途径及专性生物复合肥的优化配比提供理论依据。

Experiments show that:"Crown 3000" not only increases spermatogenic function effectively and prolongs fertility, but also prevents anaplasia of spermary and ovum effectively, and prolongs the coming of menopause and senescence process and keeps vigor of body.

试验表明："顶点 3000"不但能有效增强生精功能，延长生育能力、还能够有效阻止睾丸和卵子退行性变化，延缓更年期的到来，延缓衰老进程，保持身体活力。

Experiments show that:"Crown 3000" not only increases spermatogenic function effectively and prolongs fertility, but also prevents anaplasia of spermary a nd ovum effectively, and prolongs the coming of menopause and senescence process and keeps vigor of body.

试验表明："顶点3000"不但能有效增强生精功能，延长生育能力、还能够有效阻止睾丸和卵子退行性变化，延缓更年期的到来，延缓衰老进程，保持身体活力。

The new materials(N/BBCC and J/BBCC) and their transmigration parent put up the similar phenotypes in development stage,morphological characters,POD enzyme activity,and so on.But differences in male fertility,proline content and relative conductance rate were existed among them,in which the development of androecium in N/BBCC was abnormal,showing serious male sterility,and the proline content and relative conductance rate in N/BBCC and J/BBCC were much lower than their transmigration parent,C/BBCC.

两个新材料及其轮回亲本C/BBCC在生长发育时期、植株外部形态特征、POD酶活性等方面表现基本一致，但在雄性育性、脯氨酸含量及相对电导率上存在着明显差异，其中N/BBCC雄蕊发育不完善、花药瘦小、药内花粉量很少且多为无生活力的畸形花粉，表现严重败育；J/BBCC和N/BBCC的脯胺酸含量及相对电导率明显低于其轮回亲本C/BBCC。

To maintain the integrity of red blood cells, promoting cell synthesis, anti-pollution, anti-fertility effect.

保持红细胞的完整性，促进细胞合成，抗污染，抗不孕的功效。

A method for reducing nitrosamine in cigarette smoke using antiscorbutic vitamin 、fertility vitamin and sepiolite was discussed because nitrosamine was strong carcinogens.

研究了用维生素C、维生素E和海泡石降低卷烟烟气中亚硝胺含量的方法。

This article projects China's population trends in the next 50 years and analyzes the disadvantageous factors that might be encountered in the process of stabilizing the low fertility, which particularly aims to demonstrate the importance and arduousness of the popula- tion and family planning work...

本文以我国现行的计划生育政策为基础，对未来50年的人口发展趋势做了预测，分析了在稳定低生育水平的过程中可能出现的不利因素，意在说明21世纪上半叶，特别是2010年以前我国人口与计划生育工作的重要性和艰巨性。

This article projects China's population trends in the next 50 years and analyzes the disadvantageous factors that might be encountered in the process of stabilizing the low fertility, which particularly aims to demonstrate the importance and arduousness of the popula- tion and family plannin...

本文以我国现行的计划生育政策为基础，对未来50年的人口发展趋势做了预测，分析了在稳定低生育水平的过程中可能出现的不利因素，意在说明21世纪上半叶，特别是2010年以前我国人口与计划生育工作的重要性和艰巨性。

According to the areca production situation and soil fertility, the investigation was carried on in Hainan.

为了海南槟榔产业稳步健康的发展，针对槟榔生产现状和槟榔园土壤肥力状况进行了调查和分析。

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。