查询词典 natural number

Basing on our early stage research work about collection and description of sugarcane germplasm and the aided project of Yunnan Natural Science Fund (2001 C0015Q), the wild species Erianthus fulvus, which has good characters, cold-resistant, drought-resistant, higher Brix and less chromosome number, was utilized for the first time through intergeneric hybridization with sugarcane cultivar. Its F_1 hybrids were appraised with some new techniques and methods for germplasm enhancement.

本研究在课题组考察采集和保育鉴定甘蔗野生种质资源的前期工作基础上，依托云南省自然科学基金资助项目(2001C0015Q)，首次利用具有特异优良性状(抗旱、耐寒、锤度高、染色体数目少)的蔗茅野生种与甘蔗栽培种或品种进行属间远缘杂交，扩大甘蔗遗传多样性；采用新技术、新方法对蔗茅杂种F_1代材料进行早期鉴定评价研究，筛选具有育种价值的新种质，为进一步选育生态适应性广、抗逆性强、丰产高糖的甘蔗新品种奠定物质基础。

It was heterothallic and could not produce oospores in natural gingko-growing regions. But it could produce a large number of chlamydospores in adverse environments,such as low temperature.

该病原菌寄主范围较广，生长温度大于35℃，异宗配合，自然条件下不能产生卵孢子，但在低温等不良环境下形成大量厚垣孢子。

Giraffe fossils in the province have repeatedly found that as early as age 20 in the 20th century, the territory of Longdongqing yang xian Sang by French zhihua explore a large number of giraffes, and hyenas Hipparion fossils (existing Tianjin Museum of Natural History).

长颈鹿化石在我省有过多次发现，如早在20世纪20年代，陇东庆阳县境内就由法国人桑志华发掘出大批长颈鹿、三趾马和鬣狗等化石。

Natural Substantive Colours.—Indigo, one of the most valuable dyes, is the product of a large number of plants, the most important being different species of indigofera, which belong to the pea family.

天然直接染料——最宝贵的染料之一的靛蓝，是多种植物所产生的，其中最重要的是属于豌豆科靛蓝属中一个特殊的品种的植物。

In agriculture, introduced a total investment of 60,000,000 yuan Zhangjiajie in Hong Kong and Vietnam's pig production and processing projects with a total investment of 12,000,000 yuan in Guangxi oak, Jiang Yun-Rosin Rosin's line item; in the flow of commerce in the area, the introduction of a supermarket Fung Choi, Maney Supermarket, High Tech Computer City furniture and other large-scale supermarkets, 6; in the development of urban construction, the completion of the He Long Sports Center, Division race, Kim Garden, Kangxi Trade City, pedestrian film, the natural gas pipeline network, such as a large number of investment projects Building.

在农业方面，引进了总投资6000万元张家界港越公司乳猪生产加工项目，总投资1200万元广西橡州运江松香公司松香生产线项目；在商贸流通领域，引进了丰彩超市、梅尼超市、宏达家私城等各类大型超市6家；在城市建设开发方面，完成了贺龙体育馆、科赛、金豪花园、康茜商贸城、影视步行街、天然气管网等一大批招商项目的建设。

In the concept stage, he explored a number of ideas and drew inspiration from such natural images as octopi, starfish and plant forms – including orchids, which he states are a frequent source of reference in his work.

在这种概念性的构架下，他探究了许多的想法，构思的灵感来自于自然界的影像，如章鱼、海星和兰花这种植物，他说明的这些在作品中都涉及到了。

Compared with the natural recovery, artificial coniferous forest not only increased the number of species of bird community, but also significantly increased the density of birds, especially to significantly increase the density of Parus palustris hellmayri and Phylloscopus inornatus inornatus.

同自然恢复相比，人工针叶林恢复不仅提高了鸟类群落的物种数，还显著提高了鸟类的密度，特别是显著提高了沼泽山雀、黄眉柳莺的密度。

Farm. In the past (until app. 25 years ago) pistachiodiversity was maintained high in the field through a number of cultivation practices, s.a. use of male varieties derived from seed, use of wild Pistacia species to boost pollination and hence the fruit setting, use of natural populations of wild Pistacia (P. atlantica) as rootstock due to their well known resistance to stony and calcareous soils.

最近在农场栽培无花果技术的改变更加导致作物的多样性减少。25年前，无花果多样性通过多种栽培保持在很高的水平（源于种子的雄性物种采用，野生开心果物种改善授粉的采用，自然野生开心果作为根茎的采用——因为他们已知很好的抵抗多石和石灰性土壤的能力，等等

A large number of research results have been made on the sources,distribution, transport and transformation of polycyclic aromatic hydrocarbons in the natural environment.

本文概述了天然环境中多环芳烃的来源、分布和迁移转化规律。

A species can become threatened or endangered because of a number of factors:"presentor threatened destruction, modification or curtailment of its habitat or range; over-utilization for commercial recreation, scientific, or educational purposes; disease or predation, the inadequacy of existing statutory mechanisms; or other natural or man-made factors affecting its continued existence."

一个物种会遭受威胁和面临危险时由多种因素造成的：现实的或充满威胁的破坏；改变或剥夺它们的栖息地，为了商业娱乐科研的或教育的目的而过度利用；在疾病或者遗传方面，现存法定机制的不完善；或其他影响其继续生存的自然或人为的原因。

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％。