水力

Hydraulic design and contour of PDC bit is the key to reduce the Bit Balling［J］.

赵佩华。 PDC钻头的水力设计和轮廓是减少泥包的关键［J］。

Analyses characteristics of the household horizontal heating system in residential buildings. Proposes a hydraulic calculation method applying Kirchhoff law, which is superior to traditional methods in theory and practice.

分析了分户水平式供暖系统的特点，提出了在室内供暖系统中运用基尔霍夫定律的新的水力计算方法，从理论上对所提出的方法和传统方法进行了比较，并通过实例验证其优越性。

This paper analyzes the effect of gravity head on different forms of low temperature hot water heating system common riser, by using Kirchhoff s law analyzes downfeed and upfeed two-pipe system s hydraulic balance status.

本文分析了重力作用压头对低温热水计量采暖系统共用立管形式的影响，通过运用基尔霍夫定律分析了下分异程式双管系统和下分同程式双管系统的水力平衡状况，得出了下分异程式双管系统更适用于低温热水采暖系统的结论，并确定了立管经济比摩阻的范围和下分异程式双管可以负担的楼层数。

In this case, the forces of nature, that is, wind or water, so the original part of the work done by the Ministry of Labor.

在这种情况下，自然力，即风力或水力，做了一部分原先由劳动所做的工作。

Preparation demand for concentratedly fracturing fluid is analyzed theoretically and the technique to prepare it is researched in the technology of "preparing while injecting". Stable lactescence should be prepared at first, and then a thickener should be added.

本文从水力压裂入手，综述了压裂液及其添加剂的发展概况，从理论上分析了"边配边注"技术中"浓缩压裂液"配制要求，研究了配制浓缩压裂液的工艺：应该是先配制稳定的乳状液，然后再添加稠化剂。

Mangrove forests protect land against erosion from wind, water and storms.

红树林可以保护土地免受风力，水力和暴风雨的侵蚀。

The loess plateau is one of serious water erosion areas.

黄土高原就是是严重的水力侵蚀地区。

This paper discusses the status of low-pressure pipeline irrigation technology related to the concept and main content .

本文针对这一现状介绍了低压管道灌溉技术的相关概念和主要内容，并以山西省阳高县大白登镇基本农田整理项目为例，详细介绍并分析了在土地整理项目中低压管道灌溉系统的规划设计方法以及相关水力计算。

Based on its unique feature, we've designed the patented low-pressure, low-resistance hydraulic filtration system, which, Comparing to the traditional pressure filtration system, is more energy and water efficient.

水可能比我们想象得更变幻莫测，欧拉公司依据水的特性，独特地设计出低压、小阻力的水力过滤器，相对于传统的压力过滤系统，可实现节电和节水。

The pool has a jacuzzi built in and the yacht's interiors are done up luxuriously.

有一个游泳池和水力按摩池建造游艇的内部都做了豪华。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。