This drag force depends on the shape of the object, the size of the object, the medium through which you move it and the speed of the object.
阻力取决于物体的,形状，大小,通过的介质,以及通过的速度。
But the complexity of the new High Speed Train (HST) system is such that a medium-term risk assessment will be necessary.
但是，由于新的高速铁路系统极为复杂，因此有必要进行中期的风险评估。
The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.
这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。
The successive approximation converter is of medium speed, and average resolution.
逐次逼近式转换器具有中等的速度和分辨率。
For speed and efficiency, this virtually instantaneous medium is one of the most convenient features of modern life.
对速度和效率，这几乎是瞬时介质是最方便的特点，现代生活。
If the electron flow takes place in a vacuum, as in the case of electronic valve, the electrons will travel at considerable speed, since little resistance is offered the medium.
如果电子在真空里流动，比如电子真空管，那么电子的运行速度非常快，因为介质对电子几乎不产生什么阻力。
In the process conditions permit, the change in pump flow, head, speed and medium operating temperature operating parameters, to avoid the occurrence of cavitation.
在工艺条件允许的情况下，改变泵的流量、扬程、转速及介质的操作温度等操作参数，可以避免汽蚀的发生。
Use medium density mirror can let you filming the train speed and waterfall of silk best effect.
使用中密度镜可以让你拍摄火车飞驰和瀑布丝质般的最佳效果。
This article has described the RR bending and upsetting process for crankshaft forging of the medium and high speed diesel engine.
简要介绍了中高速柴油机曲轴锻件的RR弯曲镦锻工艺。
Some advanced technologies about the quenching transfer speed and the control of quenching medium temperature are introduced.
介绍了在工件淬火转移速度和淬火介质温度控制上的一些先进技术。
Hemolysis tests are conducted at low, medium and high pumping speed with syringes of different capacities in order to explore the interference reason that affects the different hemolysis results.
用不同容量的注射器在低、中、高不同抽吸血液的速度下进行溶血试验，以研究分析不同溶血结果的干扰原因实质。
Under this situation, we must reduce the speed of pump, increase the power of the motor, increase the import and export of pipe diameter to reduce the flow resistance of the medium.
在这种状况下，必须降低泵的转速，加大电机的功率，加大进出口的管径来减少介质的流动阻力。
By the joint action of cavitation corrosion produced in the high speed stream and medium activation corrosion, the spray nozzles of anhydrous ammonia stripper corrode seriously.
无水氨汽提塔喷嘴在高速蒸汽产生的空蚀和介质的活化腐蚀联合作用下腐蚀严重，通过材质、结构优化取得了良好的效果。
Manipulation of light speed in an optical medium can be realized by changing the dispersive properties of the medium.
通过改变介质的色散性质人们能控制光学介质中光的传播速度。
The transverse stiffness of medium-span railway bridge becomes insufficient and its transverse vibration becomes larger commonly under the raised speed freight train.
中等跨度铁路桥梁在提速货车作用下，普遍出现横向刚度不足，横向振动超限问题，严重影响了运营安全和提速计划的顺利实施。
The paper puts forward a new structural concept by analyzing the performance and structure of the first water - medium variable speed fluid couplings to further perfect the functions of equipment.
本文通过对我国第一台水介质调速型液为偶合器性能和结构的分析，提出新型结构的构想，以进一步完善设备的功能。
The research shows that anti pressure of the gas is concerned with the permeability of porous medium (the porosity and the hole diameter), the infiltration speed, and the infiltration length.
研究表明气体反压力与多孔介质的透过率(即孔隙率和孔径)、渗流速度、渗流长度有关。
The second coal plant three, four series transformation of Angang used in the medium-speed mill plus a bag short-flow milling and direct injection technology.
鞍钢二煤粉三、四系列改造采用了中速磨加一级布袋短流程制粉和直接喷吹工艺技术。
Based on the medium bus using retarder and the application in flat road, the distance control of vehicle at high speed using retarder is studied.
以装用缓行器的中型客车为实例，以缓行器在平路中的应用为着眼点，研究了利用缓行器对高速行驶车辆的距离控制问题。
The frequency response of recording devices is a function of the relative speed of the recording medium past the head.
记录设备的频率响应是上述记录媒质经过磁头的相对运动速度的函数。
The factors affecting the use of mechanical seals, including temperature, pressure, rotary speed and characteristic of the sealed medium, are analyzed.
分析了影响机械密封使用的几个因素，包括温度、压力、转速以及被密封介质的特点。
The calculation cases show that convergence speed of medium and small scale train operation diagram is faster.
数值算例结果表明，其对中小规模的运行图收敛速度较快。
The super fine PET POY with excellent properties were produced successfully by adopting the techniques of high temperature and medium-speed in the spinning.
确定采用高温、中速的工艺路线，可以开发出品质优良的超细旦多孔POY产品。
Digital camera has five differences from traditional camera: making-technique, effect of the screen, speed of the screen, medium of the storage, mode of the output.
数码相机与传统相机相比存在以下五大区别：制作工艺不同、拍摄效果不同、拍摄速度不同、存储介质不同、输入输出方式不同。
The result indicates that the sound speed of gas liquid two phase flow is much lower than single phase liquid or air medium.
结果表明：气液二相流音速比单相液体或空气介质低得多，流动机构对音速变化有显著影响。
Our country has obtained the basic technology in the medium-speed maglev technology of train design, but still keeps a longer distance from other developed countries such as German and Japan.
我国的中低速磁悬浮技术已经有一定的基础，但在高速磁悬浮列车技术上却距德、日等技术发达国家还有相当的距离。
Plate count method, method dilution method, low speed centrifugalization and dilution medium were taken the verification of methodology.
采用平皿菌落计数法、培养基稀释法、低速离心结合培养基稀释法进行方法验证。
The air ABS of medium-duty truck studied in this thesis included three parts: braking pressure adjustor, rotate speed sensor of wheel and electronic control unit (ECU).
本文研究的中型货车气压abs由制动压力调节器、轮速传感器和电子控制单元(英文简称ecu)三大部分组成。
The air ABS of medium-duty truck studied in this thesis included three parts: braking pressure adjustor, rotate speed sensor of wheel and electronic control unit (ECU).
本文研究的中型货车气压abs由制动压力调节器、轮速传感器和电子控制单元(英文简称ecu)三大部分组成。
应用推荐