The paper introduces the approximate formula for the head curve of pump, the pipe resistance curve of system and the efficiency of pump with relative value.
介绍了扬程特性、管阻特性和水泵效率的相对值近似表达式。
From the performance perspective, the type of impeller and the general efficiency closed impeller or less the same, but the type of impeller pump head curve dropped more.
从性能上讲，该型式叶轮效率高和普通闭式叶轮相差不大，但用该型式叶轮泵扬程曲线较为陡降。
From the performance perspective, the lower the efficiency of the impeller, the impeller is only equivalent to an ordinary closed around 70%, a relatively flat head curve.
从性能上讲，该叶轮效率较低，仅相当于普通闭式叶轮的70%左右，扬程曲线比较平坦。
The utility model has the advantage that the utility model not only satisfies the pump flow, namely that the head curve is smooth, but also ensures the efficiency of the pump.
本实用新型的优点是既能 满足水泵流量-扬程曲线平坦，又能保证泵的效率。
Factors affecting constant pressure difference control method and advantages and disadvantages of the control plan are analyzed theoretically through pipe system head curve and pump performance curve.
根据管道水力特性曲线与水泵的性能曲线，运用理论分析的方法，对影响末端定压差控制方式的因素和该控制方案的利弊进行了分析。
The key is the first sleeping pillows, pillow is ideal to maintain the neck and head between the natural curve without causing pressure on the neck.
最初的熟睡关键是枕头，理想的枕头是能够维持颈部与头部之间的自然曲线，又不会对颈部造成压力。
The da electric tool works, the main products are sanding machine, hot air guns, lawn machines, electric grinding head, curve sawing, waxing machine.
原大成电动工具厂，主要产品有砂光机、热风枪、草坪机、电磨头、曲线锯、打蜡机等。
The mathematical model, the method for optimizing design, and the design principle of hydraulic parameters are proposed to make head-flow curve flat.
流量曲线特点，提出了旋喷泵叶轮的优化设计数学模型、叶轮优化设计方法及水力参数的设计原则。
Principle of negative hydraulic head and multi-pore materials were used to put forward a new setup and method for the measurement of soil-water characteristic curve.
负水头控制原理与多孔膜材料相结合提供了一种测定土壤水分特征曲线的新装置和新方法。
A clothoid curve is used with its fine feature for the shape of transition section between spherical head and cylindrical shell of pressure vessel.
利用回旋曲线的优良特性，将其做为压力容器部分半球形封头与圆柱筒体之间的过渡曲线，实现了在连接边缘上无附加边缘应力的光滑连接。
Each bait hung head down with the shank of the hook inside the bait fish, tied and sewed solid and all the projecting part of the hook, the curve and the point, was covered with fresh sardines.
每个由新鲜沙丁鱼做的鱼饵都是头朝下的，钓钩的钩身穿进小鱼的身子，扎好，缝牢，钓钩的所有突出部分，弯钩和尖端，都给包在鱼肉里。
In this paper, the equivalent conversion principle from self-balanced q-s curve to traditional q-s curve on pile head is introduced simply.
本文简要地介绍了桩基自平衡测试的Q—S曲线向传统静载试验q—S曲线的等效转换原理。
After the test data under some typical head being trained, the characteristic curve at any head can be calculated quickly.
通过对有限水头下原型效率试验数据的训练，可快速准确地计算任意水头下的效率特性曲线。
Centrifugal pump characteristic curve on the efficiency of the highest point known as the design point, a pump at the point corresponding to pressure head and flow of work under the most economic.
离心泵特性曲线上的效率最高点称为设计点，泵在该点对应的压头和流量下工作最为经济。
There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zone of discharge-head characteristic curve of the pump.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
This paper Presents the design of low-head CCM with two smooth continuous straightening areas. Involute is used as continuous straightening curve of first straightening area for the first time.
给出了具有两个光滑连续矫直区的低矮型连铸机型的设计：首次采用渐开线作为第一矫直区的连续矫直曲线；
Driver for thermal plotter consists of state checking, head table output and curve output.
热敏绘图仪驱动模块由状态诊断、表头输出、曲线输出三部分组成。
After that we apply an audio correction curve that removes the head-related transfer function and accurately produces the data for display.
以后我们应用去除与头相关的传递函数的音频校正曲线和准确地导致数据为显示。
The choice of vane curve should satisfy the conditions of boundary layer non-separation and theoretical distance head by Eular equation-the basic equation of pumps.
叶片型线的选择应满足边界层不分离条件及由欧拉方程——泵的基本方程所确定的理论扬程条件。
A simple but efficient algorithm for separating head and shoulder is proposed based on searching for the greatest degree turning point in head shoulder contour curve.
提出一种简单而高效的基于查找人头肩像轮廓最大转折点的头肩分离算法。
The shape of streamlined train head is made of the 3-dimensional space free form surface, whose shape outline curve USES NURBS curve and complex shape surface USES 3-d NURBS surface.
基于流线型的列车头部外形由三维空间自由曲面构成，提出采用NURBS曲线设计外形型线和用三维nurbs曲面描述复杂三维曲面的车头外形设计方法。
Nowadays some people say the second temple entrance looks more like tiger's head, the door is the mouth and the two circular windows are the eyes and the curve eaves are just like the ears.
今天，有人说，进山第二座建筑物是老虎的头，建筑物的门和两个圆形的窗户就像老虎的嘴和眼睛； 建筑物的两根突出的飞檐就像是老虎的耳朵。
This paper explained the principle of constant-pressure water supply on the basis of characteristic curve of pipeline resistance and water pump head.
本文首先根据供水系统的管阻特性曲线和水泵扬程特性曲线，分析了恒压供水的原理；
We may believe the existence of inverted "u" curve between GHG emission and income per head under appropriate policy interventions, but China is now in the climbing up stage.
我们有理由相信，人均温室气体排放与人均收入之间会出现近似倒“U”型的曲线，但中国正处于这一曲线的爬坡阶段。
The pressure distribution curve and the influence of the angle of head are tested and analyzed using steel ball qua solid granules pressure-carrying medium through experiments.
测试分析了钢球作为固体颗粒传压介质的压力分布及压头锥角对压力分布的影响规律。
The pressure distribution curve and the influence of the angle of head are tested and analyzed using steel ball qua solid granules pressure-carrying medium through experiments.
测试分析了钢球作为固体颗粒传压介质的压力分布及压头锥角对压力分布的影响规律。
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