查询词典 vegetation

Study of the earth's surface; includes people's responses to topography and climate and soil and vegetation.

对地球表面的研究：包括人类对地形，气候，土壤，和植被的反应。

One is lined with topsoil to facilitate vegetation establishment and to reduce water infiltration.

一个偌大的表土是建立和促进植被减少水渗透。

The transect sampling technique is most often used in plant ecology to study changes in the composition of vegetation.

样条取样技术在植物生态学或植被组成的变化研究反面应用广泛。

Xuecheng centers in schools, transport facilities, schools flowers and vegetation, tree-shaded, people learn to live an ideal, is a garden-style schools.

学校位于薛城中心，交通便利，校内花草茂盛，绿树成荫，是人们学习、生活的理想之地，是一所园林式学校。

Grass green, tree-shaded piece of land vegetation in the same breath; pedestrians hurry, leisure visitors, people living on the same piece of land, to share a magic word, giving us endless wealth and gain.

小草青葱，树木成荫，草木在同一片土地呼吸；行人匆匆，游人闲适，人们在同一片土地上生活，分享一个具有魔力的词语，给我们以无尽的财富与收获。

Unburnt vegetation rots quickly, but black carbon persists in the soil for many centuries.

未燃烧的植物迅速的腐烂，但黑碳仍保留在土壤中好几个世纪。

The utilization of grass vegetation on uncropped land was the effectiveway of accumulating and retaining N in this land.

可利用撂荒土壤上的草本植被作为累积和保持N的有效手段。

Used of grass or vegetation uncut grass .

未割下的草。

The results showed that the total vegetation coverage, shrub and undershrub coverage decreased; herbage coverage increased.

结果表明：从固定沙丘、半固定沙丘到流动沙丘，总盖度、灌木盖度下降，草本盖度增加。

Natural forests were all destroyed. The main vegetation types are only Sophora davidii, Ostryopsis davidiana undershrub etc. and Hippophae rhamnoide, Populus simonii and Robinia pseudoacacia etc. built to restore the environment.

天然森林已全部遭受破坏，植被类型主要为零星分布的旱生小灌木狼牙刺、虎榛子等及以生态修复为目的的人工林沙棘、小叶杨、刺槐等。

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。