查询词典 biodiversity

Biodiversity is the base of existing and development of city.

引言城市生物多样性是城市人们生存和发展的需要，是维持城市生态系统平衡的基础。

The loss of biodiversity will change the balance of life on earth.

没有生物的多样化，地球上生命的平衡将会改变。

This is the web page of Systematics and Biodiversity.

这是系统分类学与生物多样性的网页。

The goal is to protect biodiversity, to provide stability and resilience.

我们的目标是保护物种多样性，维持生态的稳定和恢复能力。

Species diversity is an important part of biodiversity.

物种多样性是生物多样性研究的一个重要层次。

But a United Nations report has little good to say about the health of biodiversity in the world.

但联合国的报告说，没有什么好对生物多样性在世界上的健康。

The present status, existing problems of biodiversity and measures to be adopted were described in this paper.

从生物多样性的现状、存在的问题及应采取的措施等三个方面比较全面地叙述了我国生物多样性的情况。

Biodiversity is one of key factors for sustainable development, assurance to it as well.

所以，如何科学地处理和协调好生物多样性与可持续发展的关系已经成为人们关注的热点之一。

But we do not know whether lower carbon footprints will always be better for biodiversity.

但是我们不知道降低碳排放量是否总是对生物多样性是有益的。

They also provide new research methods which can assist in the conservation and characterization of biodiversity.

它们还提供新的研究方法，有助于生物多样性的保护和特性描述。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。