树种

The highest yield of the two eucalypts from cell suspension cultures differed: 4.7×10^6/mL for E. macarthurii and 6.9×10^6/mL for E. radiata.

二树种由悬浮细胞分离原生质体的产量差异颇大，毛皮桉为4.7×10^5/mL，放射桉为6.9×10^6/mL。

To investigate the characteristics of the S gene in almond,we degenerative primers according to conservative sequence of S gene in rosaceous plant and got 10 S gene fragments by PCR application from 8 almond cultivars in China.

根据蔷薇科树种S基因的保守序列设计引物，利用PCR技术对8个新疆扁桃品种S基因进行扩增，获得了10个大小不同的S基因片段。

Poplar belongs to Salicaceae, Populus. There are more than one hundard kinds in the world, while more than fivty-seven in China. So, poplar is more important than other trees for not only protecting ecology but also advancing country economy development.

杨树属杨柳科，杨属，全世界杨树有100多种，而我国就有57种之多，因此无论对于生态还是对国民经济的促进作用，杨树都起着其它树种所无法比拟的作用。

The riparian forests in the Ergis River area,composed of Salicaceae species,are important for the maintenance of the eco-environment and the promotion of sustainable development of local agriculture,stockbreeding and the social economy in the northern desert region of Xinjiang Uygur Autonomous Region.

额尔齐斯河河岸以杨柳科树种为建群种的天然林对维护新疆北部荒漠区生态环境、促进当地农牧业及社会经济的持续发展起着重要作用。

Is important economic trees and also important potential basis for sustainable development of sericultural industry.

因此，桑树是我国重要的经济树种，也是蚕丝业可持续发展的重要物质基础。

In south-west Oregon and north-West California this species growing together with Shasta red fir and California red fir.

在奥勒冈西南部与加利福尼亚北部本树种时常与Shasta red fir与California red fir混杂林状生产。

This paper discussed the distribution of forest resources in the tropics, their main types, main characteristics and present management status, and proposed twelve management modes, and these modes include establishing nature conservation region, eco-public-benefit forest management, extravisme, limiting logging and regeneration after logging, logging three and remaining seven method, tropical shelterwood system, sylviculture douce, whole cultivation method, specialized cultivation method, strip clearcutting method, developing tree species of lacking noted and nature regeneration, closing hillsides to facilitate afforestation.

本文对世界热带地区的森林资源分布、基本类型、主要特征、世界次生林的经营现状和主要经营方式讨论。这些经营方式包括建立自然保护区、生态公益林经营、&采掘主义&、限制采伐和伐后更新、&砍三留七&法、&扶持&式育林法、&抑制&式育林法、整体培育法、专门培育法、带状皆伐法、开发欠知名树种、自然更新和封山育林。

Its trees include big leaf maples, western hemlock, and Sitka spruce.

一处美国温带雨林，这可可河谷是华盛顿州的奥林匹克国家公园的一部分它的树种包括大叶枫，美国西部铁杉，和北美云杉。

Moreover, the researchers believe that in soybean, cotton, Brassica and Solanaceae plants and the development of forest tree species, AtWBC19 mycophenolate may be an alternative new phosphotransferase.

而且，研究人员认为在大豆、棉花、芸苔和茄科植物及森林树种的开发中，AtWBC19也许可替代新霉磷酸转移酶。

Sorbus pohuashanesis Hed1 is a valuable ornamental species in northern urban areas of our country.

花楸是北方未被充分开发利用的优良的绿化树种。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐