查询词典 plant structure

Vegetation ecotype tend to be xerophyte and even hyper-xerophyte and finally replaced by annual plant. Community structure and species diversity also decrease as the ecological environment worsen, In this process, the height, coverage and biomass decreases by 56.6%、 80.8% and 74.2% respectively compared to steppe, and the indices of species richness, diversity and evenness decrease by 76.4%、 56.7% and 32.0%, but β diversity indices increase by 14.6 times, especially the decease of species gregariousness and the breadth and overlay of species Niche shows that grassland tend to be more sandy and vegetation retrogression succession take place.

其中，植被生态型逐渐由中旱生向旱生、超旱生过渡，并最终被一年生植被替代；群落结构及多样性呈明显递减规律，到严重沙化阶段，草群高度、盖度、生物量与典型草原相比，下降幅度分别达到56.6%、80.8%和74.2%；物种丰富度、多样性及均匀性分别降低76.4%、56.7%和32.0%；而群落β多样性增长14.6倍，特别是多年生物种群聚度降低和生态位宽度、生态位重叠值的下降，表明草地沙化，植被发生逆行演替。

Guard cell regulates photosynthesis and transpiration, which play an important role in the life of plant, with their special cell wall structure.

保卫细胞以其特殊的胞壁结构调控着植物的光合作用和蒸腾作用，在植物生命活动中起着重要的作用。

The physical structure and amount of plant surface wax can effect insect herbivore attachment and locomotion.

植物表面蜡质的物理结构和数量能够影响植食性昆虫的附着和移动。

Elevated CO_2 not only affects the growth and development of plants,but cause changes in the structure and contents of their chemical components that resulted in the changes of the growth and development of herbivore insects fed on plant.

CO2浓度升高不但影响植物的生长发育，而且还改变植物体内的化学成分的组成与含量，从而间接地影响到植食性昆虫，并进而通过食物链影响到以之为食的天敌。

Ice storage systems have the reputation of saving operating cost for the customer by appropriately recognizing time-of-use incentives in the utility rate structure, yet at the same time, may for many systems consume more electrical energy than a conventional cooling plant without ice storage would.

对于用户来说，在适当的使用时间段的使用费率结构内，冰蓄冷系统有着节约运行费用的优点。相比之下，可能会比不采用冰蓄冷的制冷系统消耗更多的电能。

In order to reduce the influence caused by the controller parameter variations and the plant parameter perturbation, and assurance the tracking performance and the restraint disturbance performance, the improved robust two degree-of-freedom control structure and the linear matrix inequation design method are adopted to design the robust two DOF controller of the servo system in this thesis.

为了降低控制器参数及被控对象参数摄动对系统性能造成的影响，同时，保证系统的跟踪性能和抗扰性能不变。

On the other hand, some marine animals (such as dolphin, whale, et al.) and plant leafage have the capability to resist the biofouling (namely, self-cleaning effect) because of their micro-nano-binary structure.

海豚、鲸鱼等大型海洋动物的皮肤和莲藕等植物的叶子由于具有类似于微相分离形态的纳米-微米级的双重结构，因而其自身具有极好的防污功能。

The structure of plant has been decomposed into individual virtual metamer constructed using intelligent agent.

将植物离散化为基于智能Agent的叶元，能自主地执行生理过程、响应外界环境刺激、并且能和周边叶元进行通信、物质交换。

The paper studies mostly: the community structure of Orthoptera, fauna analysis, species diversity, similarity of insect community in different habitats, the analysis of ecological species group, and the origin and evolution of insect and plant community in Daqinggou Nature Reserve.

主要内容包括：直翅目昆虫群落的结构、区系组成、以及物种多样性，不同生境中昆虫群落的相似性分析，昆虫生态种组的聚类分析，最后讨论了大青沟直翅目昆虫的区系起源演化和大青沟植物群落的起源问题。

In this paper, the structure characters of steroidal alkaloids from Buxaceae were discussed. Using the steroidal alkaloids for the chemotaxonomic characters, the evidences of chemotaxonomy and plant systematics of Buxaceae were studied. The interrelations among three genera, Buxus, Pachysandra, and Sarcococca were discussed.

本文讨论了黄杨科植物甾体生物碱成分的结构特征；以甾体生物碱作为化学分类学的特征物质，初步探讨了黄杨科植物化学分类学的依据和系统位置；同时讨论了黄杨属、板凳果属（Pachysandra，又称富贵草属）和野扇花属3属间的相互关系。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。