查询词典 sediment-covered

Feed was fed in a semi-closed tilapia fingerlings rearing pond to explore the sediment formation and impact factors.

在半封闭式奥尼罗非鱼养殖池中投入饲料，探索养殖过程中鱼池沉积形成及其主要影响因子。

The results showed that there were different natural sedimentation in the rearing ponds, with or without fish, either fed or not. Compared with the non-stocking ponds, the quantity of new particle formation and the sediment formation in rearing pond was 15.63% higher and 19.49% lower in the ponds with fish when same quantity feed was introduced. In the unfed condition, however, s...

试验结果表明：无论养鱼或未养鱼，投饲或不投饲，各池均发生不同程度的沉积；外源饲料输入量相同时，养鱼池新颗粒物生成量比未养鱼池大15.63%，而沉积量比未养鱼池小19.49%；无外源饲料输入时，养鱼池的沉积量比未养鱼池大75.76%；养殖系统内养殖对象与其所处环境的相互依存和相互制约对系统新颗粒物生成及沉积具有重要作用。

The refluence of Chuangjiang River can be partly proved by the provenance of its higher terraces. The refluence had possibly occurred if the sediment originate form east but not west.

川江倒流的问题可以利用川江高阶地的物质来源进行佐证，如果川江上段高阶地的物质来源于东部而不是西部，则川江就有倒流的可能性。

Analysis should be the reinstatement of the environment, there are intermittent eruption of deep-sea sediment environment.

分析应为还原环境下，有间歇性火山喷发的深海沉积环境。

Using environmental radionuclide 210Pb to study the soil erosion and sediment had great application value and potential. When the nuclide was settled on the surface with atmosphere, it was absorbed by the soil particle quickly. The soil erosion rate on the scale of 100 years was traced through the remotion of nuclide in soil and its regular distribution nude.

利用环境放射性核素210Pb来研究土壤侵蚀和沉积具有很大的应用价值和潜力，当核素随大气沉降到地表时，迅速被土壤颗粒吸附，通过其在土壤间的移动和有规律的分布模式可以示踪100年尺度上的土壤侵性速率。

This model introduces a concept of unsaturated sediment transport, reflecting the variation of rill erosion along the distance.

该模型引入了非饱和输沙的概念，能够反映沿程细沟侵蚀的变化规律。

Then detachment rates were presented as functions of sediment concentration and rill length.

实验结果在15°，20°，25°时表现出很好的显著性。

A two-dimensional mathematical model of flow and sediment is used to calculate and analyze the erosion of the riverway at Cao'e River Gate after its completed construction.

采用平面二维水流泥沙数学模型对曹娥江大闸建成后闸上河道冲刷情况进行了计算分析。

Runoff and sediment yields are greatly affected by the type of land use.

土地利用类型不同对产流产沙的影响程度不同。

In chongqing area, the Yangtze river water is sallow sallow and contains a lot of sediment.

在重庆壹带，长江的水就是蜡黄蜡黄的，含有大量泥沙。

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。