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The material job and main conclusion are as follows:(1) A simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method; Data structure and computational model on interface are established aiming at blocks of structured grids.

本文针对粘流场数值模拟技术的研究现状和发展动态作了比较全面的回顾与展望，重点研究了网格生成技术、数值求解技术、湍流模型技术和动边界模拟技术，在此基础上建立了模拟自由面湍流场的数学模型，并成功地应用到二维溢流坝和带闸墩的三维溢流坝过坝水流的数值计算。

On the basic of above job a mathematical model of simulation turbulent flow with free surface is established and triumphantly applied to numerical computation on 2D spillway and 3D spillway with frusta of brake.The material job and main conclusion are as follows:(1)A simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method; Data structure and computational model on interface are established aiming at blocks of structured grids.

本文针对粘流场数值模拟技术的研究现状和发展动态作了比较全面的回顾与展望，重点研究了网格生成技术、数值求解技术、湍流模型技术和动边界模拟技术，在此基础上建立了模拟自由面湍流场的数学模型，并成功地应用到二维溢流坝和带闸墩的三维溢流坝过坝水流的数值计算。

This thesis sketchs out characteristics of parallel oscillatory circuit and tune means of KGPS applied in Induction quenching.

简述并联振荡电路特点以及感应加热淬火用 SCR 晶闸管中频电源调谐方法等。

The principle of the first overcurrent test equipment for FACTS and HVDC thyristor valve in China is introduced.

介绍了我国第1套适用于灵活交流输电系统和高压直流输电系统的高压晶闸管阀过电流试验装置的基本原理。

Users simply open the package and set it out with the meal, then reclose the package and store it until the next meal.

用户只需打开包装，并设置与餐出来，然后重合闸的包装和储存，直到下一顿饭了。

2 Paddock Gate will be closed 5 minutes before the time announced for the start of the race.

集车闸将会在宣布比赛开始前5分钟被关闭。

This equipment applies some advanced techniques, including short net identical phase anti-parallel link rectification, resistor split resolving rectiformer, 3 inch thyristor parallel link, on-line current automatic periodic anti-direction, and automatic voltage regulating and current stabilizing.

该装置采用了短网同相逆并联整流，阻抗裂解式整流变压器，3in(7.62cm)晶闸管并联技术，在线电流自动周期反向和自动调压、稳流技术。

All too soon I realized that passersby were staring at me in astonishment and I went off with a very red face .

等得四面的人注视我的时候，我才红了脸慢慢的走向了闸路里去。

The device includes a shoe that rubs against an adjoining surface during normal pedal operation.

装置中有一个闸瓦，在踏板正常操作时它会和邻近的一个表面产生磨擦。

Off penetrable knife gate valve is a new type of fast-flow regulating valve with both ends opened and closed operation of actuators that can double increase headstock speed .

本阀门是一种新型的快速流量调节的刀闸阀，具有两端同时开启、关闭的操作执行器，成倍提高启闭速度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。