查询词典 waterhead

The research method and principle for vadose field of confined deep water are also discussed, and the waterhead contour and hydrodynamic zoning maps are outlined for the study interval, by which flow regimes and rules of deep water are revealed in the depression.

在阐述区域地质构造和含水系统划分的基础上，论证了川西坳陷上三叠统含水系统隶属于沉积水压系统类型，提出了研究深层水渗流场的原则和方法，并根据计算勾画了研究层水头等值线图和水动力分带图，揭示了深层水的流动特点和规律

This paper analyzed and compared the common tap effluent phenomena, functioning waterhead, discharging capacity in the hydrotechnics according to calculation theories of pipe outlet, showing significance of pine outlet in practical application.

本文根据管嘴出流的计算理论，分析比较了水利工程中常见几种管嘴出流的水流现象、作用水头、泄流量，对管嘴在实际工程中的应用具有一定的现实意义。

Based on an investigation of a certain waterhead region for pollution of organic chemicals, like oils and benzene, heath risk assessment of drinking water in the region was performed using the MMSOILS model, a multimedia exposure assessment model, with Benzene as a target contaminant.

以某水源地油和苯等有机污染调查为依据，利用多介质暴露评价模型，以苯为评价的目标污染物，分析烯烃厂不同分区的土壤苯污染对A地区造成的饮用地下水健康风险。

Moreover, not only can the resources be effectively exploited and used, the social progress and economic development promoted, but also can the ecosystem and environment be improved, so that the karst mountain will be able to play its due role as an area of ecological protective region and waterhead of the Changjiang and Zhujiang Rivers.

全文分4个主要部分，内容包括综述；自然环境及社会经济条件、资源态势分析；生态系统特征及退化原因、过程研究；以往生态环境改善工作存在的主要问题和失误、生态环境建设途径和具体措施探讨。

It is suggested that attention be given to quality of incoming water from the upper reaches while strict measures be taken to control the intensity of land exploitation in hydraulically sensitive areas and build up a ring-structure land use pattern in the waterhead region by means of land use and socio-economic driving forces.

建议在开展平原河网地区水源保护工作中，应在关注上游来水状况的同时，从土地利用及其社会经济驱动两方面控制水文敏感区域土地开发强度，构筑水源地圈层土地利用格局。

Based on theories and methods of ecological economics, we explain the functions of ecosystem services in Chengdu city, Sichuan Province of China such as conditioning climate, fixing carbon and releasing oxygen, preserving soil, keeping waterhead, purifying environment, and restraining noises, and estimate the economic value of it.

运用生态经济学原理与方法，阐释了成都市生态系统调节气候、固碳释氧、保持土壤、涵养水源、净化环境和减弱噪声等生态服务功能，对其经济价值进行评估。

Results show that the water environment of the upper Huangpu River is affected integratedly by land use and flow from the upper reaches; river water quality is negatively related to proportion of industrial land in the sample zones; and the water quality at the water catchment near the Songpu Bridge is closely related to the water quality of the flow coming down from the upper streams, and driving forces of change in land use, such as development of the industry and population density in the waterhead region.

结果表明，黄浦江上游水环境质量受到土地利用格局及上游来水的综合影响，各样带工业用地比例与水质改善指数呈极显著负相关(P.01)，松浦大桥取水口水质与上游来水水质以及水源地当地的工业发展、人口密度等土地利用变化驱动力具有很好的关联性。

According to importance of ecosystem services, the function of fixing carbon and releasing oxygen is the most important, the function of conditioning climate is the second, and the functions of keeping waterhead, preserving soil, purifying environment, and restraining noises are also important.

依据重要性，由大到小依次为固碳释氧功能、调节气候功能、涵养水源功能、保持土壤功能、净化空气功能与减弱噪声功能。

By studying factors affecting short-termoptimal dispatching of cascaded hydropower plants, such as water amount, waterhead, water delay, water smoothing effect, and instable flow phenomenon ofdownriver, and analysis of the simulation results, the optimal operation ofcascaded hydropower plants is summarized, to help implement the optimaloperation of the whole system and provide guidance for the real-time operation,increasing the profits of the power plants.

通过研究影响梯级水库短期优化调度的水量联系、水头联系、水流滞时和坦化现象、下游不稳定流现象等，以及对模拟仿真计算结果的分析，归纳总结出梯级电站短期调度运行规律用于指导水库实时运行，以实现整个梯级电站的优化运行，达到增加整个梯级电站发电收益的目的。

Based on research progress on economic value of ecosystem services, taking Shenzhen for instance, the authors analyze the functions of ecosystem services such as conditioning climate, fixing carbon and releasing oxygen, preserving soil, keeping waterhead, purifying environment, and restraining noises.

综述国内外生态系统服务功能价值评估相关研究进展，以深圳市为例，运用生态经济学原理与方法，阐释了生态系统调节气候、固碳释氧、保持土壤、涵养水源、净化环境和减弱噪声等生态服务功能，对其经济价值进行评估。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。