查询词典 high speed

The concepts of high speed impact and low speed contact in gear rattling were proposed firstly in accordance with the disadvantages of the present methods.

针对以往研究齿轮系统拍击振动方法存在的不足，提出了齿轮系统拍击振动中高速碰撞和低速接触的概念。

This thesis is based on the developing project of "Testing and research on the related technology of the aerodynamic effect in the high speed railway tunnel", which is from the national railway department and also based on the project of "The research on the micro-pressure wave and tunnel hood around the gate of the tunnel in YuHuai railway with the speed of 200km/h",which is from the second surveyed and design institute of China Railways. Research on the lucubration of tunnel aerodynamic effects mechanism and corresponding alleviation measure was carried out.

本文以铁道部科技研究开发计划项目《高速铁路隧道空气动力学相关技术的研究与试验测试》和铁道部第二勘测设计院《遂渝铁路时速200公里隧道洞口微压波及缓冲设施研究》为依托，结合我国国情，对隧道空气动力学效应的作用机制和其减缓措施进行研究。

Since the dot matrix printer has a medium-resolution and print speed, supplies cheap, at the same time also has a number of high speed jump lines, copy print, wide-format printing, maintenance, etc, are still in the Office and a transaction print reports, invoices, and so on of the type aerocraft.

由于针式打印机具有中等分辨率和打印速度、耗材便宜，同时还具有高速跳行、多份拷贝打印、宽幅面打印、维修方便等特点，目前仍然是办公和事务处理中打印报表、发票等的优选机种。

In an off-line mode, the rate can reach 100 frames per second with video accelerator to speed up it. Jt better meets the requirements of JR imaging guidance with high speed and realtime.

在离线方式下，采用硬件加速后的帧速可以达到100帧/秒以上，更好地满足了红外成像制导仿真高速、实时性的要求。

Now keyword search over relational database is becoming a hot research topic in both database and IR area. There are two kinds of popular keyword search systems, while neither of them can give accurate results with high speed. The on-line system can obtain the latest search results while the search speed is low; The off-line system speeds the query processing by means of preprocessing, but the disadvantage lies in expensive cost needed to preprocess again once the database is updated.

关系数据库上的关键词检索已成为数据库和信息检索领域的研究热点之一现有数据库关键词检索系统可分为在线和离线两大类，它们都难以兼顾查询效率和效果：在线系统能够获得数据库最新结果，但速度较慢；离线系统使用预处理提高查询速度，但若数据库更新就要重新执行预处理。

However, a series problems cannot be neglected, such as the "the pauperization growth" which describes the phenomenon of high speed growth in volume of export along with the relatively low speed growth in value.

诸如出口额的高速增长与较低的价值增长相伴随的"贫困化增长"问题；主体多元化带来出口企业之问激烈的价格竞争引起贸易秩序混乱的问题等等。

With the rapid development of electricity, spaceflight, petrochemistry and mechanical manufacture, kinds of rotary machines develop towards the direction of high speed and efficiency. So the rotary speed and stability of rotor-bearing are required more highly.

随着电力、航空航天、石油化工及机械制造业的飞速发展，各种旋转机械向高速、大功率方向发展，因此对转子—轴承系统的动力学特性提出了更高的要求。

NTN development went Dmn to be worth diameter of 〔 bearing pitch circle × rotate speed coming back is spent 〕 is 1.5 million, but the thrust needle bearing that high speed runs.

NTN开发出了dmn值〔轴承节圆直径×旋转速度〕为150万、可高速运转的推力滚针轴承。

A new platform provides an excellent balance of high-speed stability and low speed agility.

一个新的平台，提供了高速稳定和低速灵活性很好的平衡。

Power of the lathe, and rigid, and a wide range of spindle speed for a strong or high-speed cutting can be turned face, cylindrical, inner hole, as well as the metric system, English, modulus, diametral pitch a variety of threads, and bear the drilling, sets of materials, technology, etc. Boring.

本车床功率大，刚性强、主轴调速范围广，适用于强力或高速切削，可以车削端面、外圆、内孔以及公制、英制、模数、径节各种螺纹，并可承担钻孔，套料、镗孔等工艺。

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。