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The results indicate that different molecular weight of dextran could be obtained by direct fermentation,and the acid hydrolyzing in the old technology be avoided.The yield reached the maximum by controlling the pH value to be 8.0,and the inorganic salt could promote the growth of the Leuconostoc mesenteriodes with the effect of promotion being Mn2++Ca2+>Mn2+>Ca2+.

结果表明:通过定向发酵技术可得到符合要求的不同分子量的右旋糖酐,避免了老工艺中酸水解工艺;控制发酵培养基pH值为8.0,可使产率最大;无机盐离子Mn2+和Ca2+能促进L.M菌的生长,其促进菌生长的程度大小依次为:Mn2++Ca2+>Mn2+>Ca2+。

The most dominant species, Coilia nasus, was accounted for 55.19%, and then Pseudolaubuca sinensis (16.99%), Liza haematocheila (10.94%), Tridentiger trigonocephalus (3.92%), Acanthogobius ommaturus (2.67%), Siniperca chuatsi (1.68%), Sillago japonica (1.68%), Acentrogobius pflaumii (0.99%), Periophthalmus modestus (0.99%), Acanthogobius flavimanus (0.89%). These 10 species were accounted for 96% in the total abundance.

其中鳀科的刀鲚占总个体数的55.19%,其后依次为银飘鱼(16.99%)、鱼(10.94%)、纹缟虾虎鱼(3.92%)、斑尾刺虾虎角(2.67%)、鳜(1.68%)、少鳞(l.68%)、普氏细棘虾虎鱼(0.99%)、弹涂鱼(0.99%)、黄鳍刺虾虎鱼(0.89%),这10种的个体数占据了总捕获个体数的96%。

The natural enemies group, neutral arthropod group and phytophagy arthropod group of the two sub-systems were respectively analyzed and have found that all types of arthropods of the two sub-systems can be divided into three different types of groups. The first group is which living in two habitats and the species current is few impacted by the changes of habitats; The second group is which can living in two habitats in turn ,but can transfer to another in the time the habitats was deeply disturbed ;The third one can only living in one habitats and can make the another habitats as a temporary habitats.

两个亚系统的天敌类群、中性节肢动物类群、植食性节肢动物类群分别进行分析发现两个亚系统的各类群节肢动物均可划分为三种不同类型,第一种为栖居于两种生境且物种流受生境变化影响较小类群;第二种为可依次栖居于两个不同生境,生境的变化对其物种流产生较大影响;第三种为栖居于某一单一生境,但可将另一系统作为某一虫态的临时栖境。

This paper, based on the land utilization change data during 1997 to 2005, applies the information entropy and equilibrium theory to study the temporal-spatial changes in land utilization structure in Lingshui county, with results indicating: a first slow and then a fast rise in information entropy of land utilization structure in Lingshui county and a general trend of rising homogeneity in land utilization structure; the information entropy of land utilization structure ascends from NW to SE, where can be divided into five regions, ecological protected area, resort area, farmland protected area, ecological agricultural construction area and comprehensive industrial developing area; the economic factors and populational structure play a key part in land utilization structure changes via principle componential analysis.

基于陵水县1997-2005年土地利用变更数据,利用信息熵和均衡度的基本原理,对陵水县土地利用结构的时空变化进行实证分析。结果表明:1陵水县1997-2005年土地利用结构信息熵和均衡度呈现先缓慢增长、再加速增长的变化过程,总趋势是土地利用结构的均质性逐渐增强;2)陵水县土地利用结构信息熵从西北向东南逐渐递增,依次可分为生态保育区、风景旅游区,基本农田保护区、生态农业建设区和综合产业发展区5个区域;3)利用主成分分析,经济因素和人口结构对陵水县土地利用结构变化影响重大。

A new quadrifilar helix antenna is given. The antenna has four feed ports and the phase difference between two border upon ports is 90 degree. The simulation results indicate that this antenna has a good performance of axial ratio and gain pattern.

为了改善天线的轴比性能,文章提出了一种4臂等幅馈电、相位依次相差90度的天线方案,仿真结果表明,这种天线的增益特性和轴比特性都得到了较大的改善。

The result shows that the purification efficiencies of ammonia-nitrogen and ortho-phosphate by immobilized algae in a stationary phase are higher than that in an exponential phase; the starvation treatment increases the removing rates of ammonia-nitrogen and ortho-phosphate, cells of Scenedesmus starved for 48 hours can obtain higher NF4(superscript +)-N and PO(superscript 3- subscript 4)-P removal efficiencies than starved for 48, 72, 24 and 0 hours respectively.

结果表明:静止初期藻细胞对NH4-N和PO(上标 3-下标 4)-P去除率比指数末期高,处理5d后,静止初期细胞对NH4-N和PO(上标 3-下标 4)-P的去除率分别为76.7%及91.7%,指数末期细胞氮、磷的去除率分别为75.4%和88.7%;饥饿处理可明显提高藻细胞对NH4-N和PO(上标 3-下标 4)-P的去除效率,藻细胞饥饿时间对NH4-N和PO(上标 3-下标 4)-P去除率的影响大小依次为48h,72h,24h,0h。

This thesis aims at the deficiencies in the study of Guangya, puts forward a actual task of revaluing its linguistics importance, and applys the theory of semasiology, lexics and lexicology, from the overall characters, the meaning-relation to the compilation, to give a general review of Shigu.

本文针对《广雅》研究相对薄弱的历史状况,提出了重估其语言学价值的现实任务,并具体以《广雅·释诂》为代表运用现代语义学、词汇学、词典学的理论方法,依次从&性质特色&、&意义关系&与&编纂原则&三个角度切入,对《释诂》进行了一次探索性的研究。

With different scenarios sediment discharge followed by grassland>shrubland>broad-leaved woodland>orchard>coniferous woodland,among the scenarios grassland made sediment diacharge increase while the others made sediment discharge reduce.Along with the forest cover increased,the runoff and sediment discharge decreased;meanwhile the sediment discharge had the maximum rate of descent with the forest coverage rate between 40-70%.

不同情景的输沙量依次为草地>灌木林地>阔叶林地>园地>针叶林地,与原地类比较草地使模拟输沙量增加,其余的情景都使模拟输沙量减少;不同森林覆盖率情景下年均径流和输沙量都随森林覆盖率的增大呈下降趋势,森林覆盖率在40-70%之间的输沙量下降速率最大。

As the intensity of the passion increases, it appears respectively as interest, willing, decision, and till faith, which consti tute the different levels of the individual's subjectivity.

这种感情随着强度的增长,依次表现为志趣、意愿、决断、直到信仰的层面,这些组成了单个的人主体性的层面。

As the intensity of the passion increases, it appears respectively as interest, willing, decision, and till faith, which consti tute the different levels of the individual's subjectivity.

这种激情随着强度的增加,依次表现为志趣、意愿、决断、直到信仰的层面,这些构成了单个的人主体性的层面。

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推荐网络例句

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。