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To meet requirement of production and quicken rolling speed, No.2 heating furnace was put into operation in 2002 and No.3 in 2007. All automatic control was adopted, displacement of walking beam was detected by displacement transducer, and acceleration and deceleration control of walking beam was carried out through proportional valve and by use of slope technique in program of GE 90-70 PLC, thus, travelling speed of walking beam can be controlled and lift and release of slab can be operated lightly.

为适应生产的需要，加快轧制速度，2002年投产的2号加热炉和2007年投产的3号加热炉均采用全自动控制，利用位移传感器检测步进梁的位移量，通过比例阀以及在GE90-70PLC程序中采用斜坡技术对步进梁运动进行加减速控制，达到控制步进梁运行速度的目的，实现对板坯的轻拿轻放。

With the acceleration of urbanization development these years, the impact of the human various activities on hydro- ecological environment is very serious, including landscape structure and function destroyed, biodiversity lowed and natural landscape disappeared, which make urban waterlog deteriorated and hydrologic environment polluted et.

近年来，随着城市化的加速发展，人类的各项活动对流域水文生态环境的干扰尤为强烈，原有的景观结构遭到破坏，系统功能紊乱、减弱甚至丧失；生物多样性下降以及自然景观的衰退，加剧了城市涝灾的发生、水资源短缺及水环境污染。

Using the ground and vehicular test systems,many parameters such as pressure change, wind caused by train ,micro-pressure wave and vibration acceleration of the wall of tunnel were tested.

利用地面和车载测试系统，对列车车体表面、车厢内部、隧道壁面空气压力变化、隧道内列车风、隧道口微气压波和隧道壁面振动加速度等参数进行测试。

It is also found that the weak extinction limit decreases with the increasing acceleration coefficient of centrifugal force.

而贫油熄火极限随着离心力加速度系数G的增大而减小。

"I have to work out where the traction of the car actually is to prevent wheelspin and then gradually build the speed up until we are ready to go for the 300mph mark," says Green."It will be somewhere close to boy racer acceleration: the faster we can get it off the line the higher the top speed will be."

"我们找出了这辆车牵引力的具体位置以避免打滑，然后逐渐提速直到我们准备好冲击时速300英里的纪录，"格林说，"这与孩子们比赛加速跑有些相似：我们越快离开起跑线，最高速度也就越高。"

Traction Control contains wheelspin and Steering Torque Assist counters vehicle yaw moments under braking or acceleration.

牵引力控制系统包含在刹车和加速车轮扭矩协助和指导柜台车辆侧滑的时刻。

Utilized the correlative knowledge of mathematics and theoretical mechanics, the movement measure of the rolling forming of rectangle ring have been studied that based on the ring rolling theory. And the corresponding geometrical models and mathematical models have been established. It was revealed the variation law of ring in the cold rolling process.With the rolling processing, the inside and outside diameters of ring gradually increased with the cures similarly hyperbolic and the augment speed of the inside diameter was obviously larger than the augment speed of the outside diameter. With the rolling processing, the displacement, speed and acceleration of the ring centre gradually increased in the feeding direction in the horizontal and vertical ring rolling mill. With the rolling processing, the moment of inertia which ring reeled its centre and the whirligig of ring gradually increased. It caused the rotary speed gradually decreased. And it was benefit to decrease the circle tolerance and improve the precision of final molding.

本文基于环件轧制理论，运用相关的数学知识和理论力学知识，研究了冷轧过程中矩形截面环件轧制成形的运动测量，并建立相关的几何模型和数学模型，揭示了冷轧过程中环件的变化规律：随着轧制过程的进行，环件的内外径随类似于双曲线的曲线逐渐增大，且环件内径增大速度大于外径增大速度；在卧式轧环机和立式轧环机下，随着轧制过程的进行，环件中心的位移、速度及加速度不断增大；随着轧制过程的进行，环件绕其中心的转动惯量不断增大，导致环件的转速不断减小，这样有利于环件的整圆和最终成形环件的精度。

Part Ⅰ: Since the study about breaking onset criteria base on the downward acceleration or on the wave slope shows great discrepancy, the models that estimating breaking probability and whitecap coverage according to these two criteria are problematic.

第一部分：因所采用的动力学或波陡判据的不确定性和海浪谱四阶矩的难以确定，现已提出的关于风浪破碎率和白浪覆盖率的统计模式有一定的不确定性。

The background of social transition, which is the division of social structure, the acceleration of social mobility, and the disticntion of social differiation, not only leads to the wideness of the interest gap, but also brings about both the complication of social relation and the intensification of conflicts among the different interest groups.

在社会转型大背景下，随着我国社会结构分化的加速，带来了社会流动的频仍和社会分层的明显，也带来了利益差距的扩大、社会关系的复杂化和利益矛盾冲突的加剧。

According to Newton's law, all objects fall to Earth at a rate of acceleration of 9.8 meter per sec2 (32 ft/sec2), which in the case of our wing, is opposed or slowed down by the aerodynamic forces.

根据牛顿定理，所有的物体皆以每秒9.8米(32英0/秒)的加速度的比率下降到地球。而我们伞翼情况，则是被空气动力学的力量抵消或者减速。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。