查询词典 vegetation

This is a preliminary research on the application of landscape ecology in vegetation monitoring.

植被是生态系统最基本的组成部分，是自然环境最直观的反映。

She says that they seem to smell of spring vegetation.

她说，他们似乎气味春天的植被。

He is also noted for having recognized the influence of the soil on the distribution of vegetation.

他的贡献还在于他认识到土壤对植被分布的影响。

The vegetation coverage here should be over 90%.

这里的植物覆盖率应该达到90％以上。

One does not find much vegetation in this area .

这一地区没有什么植物。

Vegetation plays an important part in the world's ecosystem.

植被在全球生态系统中扮演着重要的角色。

L that the vegetation of this area should be preserved.

保护这一地区的植被是很必要的。

However, they can all be categorized as effects on vegetation structure and function.

本文围绕这两个方面，基于遥感和地理信息系统技术。

Therefore, special care must be taken to ensure a sufficient amount of vegetation in the city.

因此，在城市里，应当采取特别措施以确保有足够的绿色植物。

With the rapid growth of modern cities, urban vegetation has been greatly reduced.

随着现代城市的迅猛增长，都市的绿色植物大大减少了。

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。