This friction tends to slow the speed of winds, making them far less efficient at dispersing pollutants.
这种摩擦往往会减慢风的速度，使它们吹散污染物的效率大大降低。
The falling object, after traveling a certain distance through the air reaches a final speed, or "terminal velocity," because the object's friction with the air slows the fall.
物体在下落一定距离后由于空气阻力都会达到一个终极速度。
For tapered roller large end and sliding friction between the inner wall, the speed limit is often lower than the same size cylindrical roller bearings.
因圆锥滚子大端与内圈挡边之间滑动摩擦，其极限转速往往低于同尺寸的圆柱滚子轴承。
Setting main parameters of disc flying shears are presented in detail. including cut Angle, bite conditions, amount of scissors overlapping, friction coefficient and rolling speed etc.
详细介绍了圆盘式飞剪各主要参数的确定，包括交角、咬入条件、剪刃重叠量、摩擦系数、轧制速度等。
The influence of train running speed, wheel-rail friction coefficient, vehicle load, track geometric irregularity, partly load, gauge and the shape of wheel tread on derailment was emphasized.
论文重点分析了车辆运行速度、轮轨摩擦系数、车辆载重、轨道几何不平顺、偏载、轨距大小、车轮踏面形状等因素对脱轨的影响。
If grit is sharp anp irregular, the coefficient of friction, consumption of energy and wear speed will be greater.
尖锐的、不规则形状的磨粒，摩擦系数、能量消耗、磨损速度都较大。
Experimental and analytical results show that the system can be used to study the friction drag of the vehicle models at certain speed range, which full-fills the design demand.
试验和分析结果表明，该系统在一定的速度范围内可以有效地测试航行器模型所受摩擦阻力，满足了设计要求。
The influence of some controllable factors, such as load and speed, on the friction coefficient of the bearing was investigated.
考察了载荷和速度等可控因素对这种轴承摩擦系数的影响。
The friction factor between two tooth surfaces of instrument gears during one meshing process is imitatively measured in this paper under the condition of ultra-low-speed.
本文在极低速情况下，模拟测定了仪表齿轮在一齿啮合过程中两齿轮齿面间摩擦系数的变化情况。
The composite brake shoe of cast iron is developed to improve the running speed on existing line. The ceramic particles are used in the brake shoe to improve the friction coefficient.
为提高既有线的运行速度，开发了铸铁合成闸瓦，该闸瓦利用陶瓷粒子来提高摩擦系数。
The stability of transverse vibration in high speed automobile and the influence of torsional vibration, friction, damping and movement of spline shaft on vibration are discussed.
本文分析了汽车传动轴高速状态下横向振动的稳定性与扭转振动，以及摩擦力、阻尼和花键轴的运动对横向振动的影响。
The sliding friction is an arbitrary nonlinear function of the sliding speed.
作为摄动因素的摩擦力是滑动速度的任意非线性函数。
The falling object, after traveling a certain distance through the air reaches a final speed, or "terminal velocity, " because the object's friction with the air slows the fall.
物体在下落一定距离后由于空气阻力都会达到一个终极速度。
With the same size compared to other types of bearings, such bearings friction coefficient is small, extreme high speed, high precision, when a user selection of the preferred bearing type.
与尺寸相同的其它类型轴承相比，该类轴承摩擦系数小，极限转速高，精度高，是用户选型时首选的轴承类型。
And the same size compared to other types, this type of bearing friction small, high-limit speed.
与尺寸相同的其它类型比较，此类轴承摩擦系数小，极限转速高。
Some differences between the rolls of high-speed steel and high-chrome iron in hot crown, friction coellieient, characteristics of oxidative film and anti-accident and so on are analyzed.
对比分析了高速钢与高铬铁轧辊在热凸度、摩擦系数、氧化膜特征、抗事故性等方面的区别；
Considering the friction of borehole wall against water moving with high speed, a physical model of water stemming movement in water blasting is set up in this paper.
本文计及水在高速运动时与壁面的摩擦阻力，建立了水封爆破水塞运动的物理模型。
Aimed at aerostatic guideway, a two dimensional distribution of air pressure and effect factor on the friction force were analyzed under high speed working conditions.
以静压气浮导轨为研究对象，对导轨气浮块底部气体压力的二维分布规律及影响摩擦力的因素进行了理论分析。
The underwater high-speed vehicle surfaces are enveloped by cavity entirely or mostly, which reduces skin friction drag and allows the vehicle to obtain high speed.
水下超高速航行体的全部或大部分表面被空泡包裹，使其阻力显著降低而达到高速航行的目的。
Swirl pump is compact, light weighted and no speed-adjusting device needed, no friction except bearer, low noise, no water and no oil in the output air.
旋涡气泵结构紧凑，体积小，重量轻，不需变速装置，除轴承外其它部位没有直接接触磨擦，噪音低，送出的气源无水无油。
The non-sinuous oscillation of the mold is used to reduce the mold friction force and stick type breakout, and to lower the oscillation frequency for high speed casting.
应用结晶器非正弦振动技术可以降低结晶器摩擦阻力，减少粘结性漏钢，同时大幅度降低高拉速时的结晶器振动频率。
The results showed that the sulphide layer could improve the anti scuffing property of steel at low speed remarkably, and showed excellent friction reducing and wear resistant effects.
结果表明：在低速条件下渗硫层可显著改善钢表面的抗擦伤性能，且具有较好的减摩耐磨作用。
A new braking system model was built from a study on the solution method of the friction brake torque under the conditions of braking to near zero speed and braking lock.
研究了制动近零状态和制动抱死状态下制动力矩的求解理论，开发了一种新的制动系统模型。
With less coefficient of friction, high limiting speed, large size range and colorful combination of structure;
该类轴承摩擦系数小，极限转速高，尺寸范围与形势变化多样。
They are used to input or output the power through the friction and a pair of helical gears is also used to adjust the speed, so the speed can change between 0.75 and 1.22.
该装置通过八个钢球利用摩擦力将动力进行输入输出，用一对斜齿轮进行分度调速，从而使自行车在0.75～1.22之间进行无级调速。
The simulation results show that the proposed method can improve system's speed estimation, and it is effective for promoting the efficacy of friction and deadzone compensation.
仿真结果表明：该控制方法在提高系统速度估计精度、改善摩擦力和死区补偿效果等方面具有很好的效果，为直流伺服的系统设计提供了一种较好的方法。
Aming at the local feature of friction, a new type and fast speed identification algorithm is proposed to guarantee its implementation on chip or embedded processor.
并且针对摩擦力的局部性特点，提出了一种新颖、快速的辨识算法，以保证在芯片或嵌入式处理器上实施。
Aming at the local feature of friction, a new type and fast speed identification algorithm is proposed to guarantee its implementation on chip or embedded processor.
并且针对摩擦力的局部性特点，提出了一种新颖、快速的辨识算法，以保证在芯片或嵌入式处理器上实施。
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