查询词典 vegetation

Vegetation construction of forests and grass for soil and water conservation is a process of natural formation of plant community and natural ecological restoration with the participation of humans.

林草植被建设是人工参与下的植物群落自然形成和生态自然修复过程。

This article examined the influence on the distribution of Oncomelania, the middle-parasitizeder of schistosome, the changing by ecological environment such as the water level, vegetation and climate, resulted from key projects such as Three Gorges Project, the re-submerging particular polders and the South-to-North Water Diversion Project.

归纳了我国三峡工程、退田还湖及南水北调等一系列重大工程所引起水位、植被及微生物气候等生态环境要素变化对血吸虫唯一中间宿主钉螺分布的影响，分析了血吸虫病疫区的变化趋势和钉螺北移的可能性。

This article examined the influence on the distribution of 〖WTBX〗Oncomelania〖WTBZ〗,the middleparasitizeder of schistosome,the changing by ecological environment such as the water level,vegetation and climate,resulted from key projects such as Three Gorges Project,the resubmerging particular polders and the SouthtoNorth Water Diversion Project.

归纳了我国三峡工程、退田还湖及南水北调等一系列重大工程所引起水位、植被及微生物气候等生态环境要素变化对血吸虫唯一中间宿主钉螺分布的影响，分析了血吸虫病疫区的变化趋势和钉螺北移的可能性。

Using steel - as it is lightweight, durable, and can resist distortion - in combination with independent plinths and shallow foundation settings, the original vegetation and soil will be minimally disturbed.

该系列具有以下优点：1。钢结构体系自重轻，抗变形能力和可塑性强，且可采用独立柱基和很小的基础埋深，因此对场地原有植被和渗水方式破坏很小。

The sampling sites were divided into Suaeda salsa land, Spartina land and beach according to the vegetation. The microorganisms were isolated and counted with pour plate technique.

根据植被不同，将采样点划分为盐蒿带、米草带和光滩带，采用稀释平板法进行微生物分离计数。

Australian Pelicans prefer large expanses of open water without too much aquatic vegetation.

澳大利亚鹈鹕喜欢生活在辽阔及没有太多植物的水面。

In the region of high elevation, vegetation coverage of high-, climate warming, adequate sunshine, soil for the yellow-brown soil, very suitable for the growth of tea.

该地区海拔高，植被覆盖率高，气候温暖，日照充足，土壤多为黄棕壤，非常适合茶树的生长。

In line with Fengyang history and the current status and characters in quartz mining, this project adopts the combination of ecologic vegetation recovering and landscape recreation.

根据凤阳县历史以及目前石英砂开采现状和特点，本次工程将采取生态植被恢复与人工景观再造相结合的方式。

Winter wheat ; Leaf area index; Vegetation index; Model for estimating yield ; Leaf area duration

冬小麦；叶面积系数；植被指数；估产模型；叶面积持久期

A hybrid inversion scheme for estimating surface variables of vegetation is proposed under Bayesian Network theory,and then is used to estimate chlorophyll content of winter wheat leaves and Leaf Area Index of canopy.

基于贝叶斯网络理论，建立用于植被地表参数估计的混合反演模式，结合遥感物理模型实现了冬小麦叶片叶绿素含量和冠层叶面积指数的反演。

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。