水流

In this paper, based on the water balance equation, infiltration parameters from advance and runoff model method was used to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础，采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法，并根据一组田间实测沟灌资料对入渗参数进行了估算，利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

In this paper,established the functions of irrigation application efficiency,irrigationdistribution efficiency and water store efficiency according to the parameters of water flowadvance and infiltration for furrow and border irrigation with tailor water condition.

本文提出根据膜孔沟灌的水量平衡原理，由水流行进方程和有关参数，确定入渗方程，并根据灌水均匀度、灌溉效率和储水效率的定义，推导出长沟畦灌溉有排水条件下由行进方程和入渗方程的参数确定的灌水均匀度方程，与沟畦长分段求解方法相比，其误差小于2%。

Based on the experiment, the flow variation and impact on release works is studied. The vortex theory is adopted to study the side shrinkage angle and optimum step of the bulkhead gate to improve the overflowing condition.

通过试验分析研究了闸后水舌的流态变化规律及其对泄水建筑物的影响；采用涡流理论分析研究闸后水舌侧收缩角的计算方法；根据侧收缩角计算出闸门槽的最优错距，从而改善闸孔出流的水流条件。

The research result cannot satisfy the need of engineering design.In this paper, according to practical liquid differential equation ,allowing for moving rule and characteristic of moving field of vertical vortex , simplifying N-S equation, I have studied the discipline of condition, velocity and pressure of vertical vortex and analyzed some theory solutions such as plain vortex solution and solution in axial direction.

本文从实际流体运动微分方程出发，结合立轴旋涡运动规律和流场特征，采用对称恒定性假设，简化N—S方程，研究了立轴旋涡的水流流态、速度与压力的分布规律，分析了若干理论解，如平面螺旋流解、轴向流解等。

The subject of the mechanism-based emulsion formulated based on the theory, the ratio in the emulsion is to use part of the Venturi tube by high-speed water pipes in their place to produce negative pressure to suction up oil ratio of the working principle, and the higher degree of automation systems, the emulsion with the concentration can completely meet the "Coal Mine Safety Regulations" requirements.

本课题在基于乳化液配制机理的理论基础之上，在乳化液配比部分是利用通过文丘里管的高速水流在其喉管处产生负压将油吸上来的工作原理进行配比的，该系统自动化程度较高，所配乳化液浓度完全能够满足《煤矿安全规程》要求。

Through using the proposed method to allocate the overall water head, velocity in the canal of the South-to-North Water Diversion Project could be stable.

该水头分配方法能使南水北调中线干渠的水流速度保持平稳，同时全线输水总水功率损耗最小。

Install valve in the line with arrow on valve body pointing in the direction of flow.

在管道上安装阀门，阀门上的箭头方向指向水流流动方向。

Install the valve in the line with the arrow on the valve body pointing in the direction of flow.

安装时要使得阀体上的箭头指向水流方向。

Install the valve in the line with the arrow on valve body pointing in the direction of flow.

将阀门安装在管线上时要使得阀体上的箭头指向水流方向。

At present, the main product has the fire sprinklers series, wet alarm valve, deluge valve series, the flow indicator series, water spray, water curtain nozzle series, the fire control valves series, PS20 ~ PS80 fire water cannons, PP24 ~ PP64 Fire bubble gun, PSKD30 ~ PSKD60 electric control fire water cannons, PHY Series storage pressure air bubble mixing device, such as the proportion of products in the domestic market by the user's consistent high praise, has great competitive advantage.

目前主要的消防产品有洒水喷头系列、湿式报警阀系列、雨淋阀系列、水流指示器系列、水雾、水幕喷头系列、消防控制阀门系列、PS20～PS80消防水炮、PP24～PP64消防泡沫炮、PSKD30～PSKD60电控消防水炮、PHY系列贮压式空气泡沫比例混合装置等产品在国内市场受到用户的一致好评，具有很大的竞争优势。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了