制动作用

Air brake system is an important component part of the train, the train speed and heavy transport development trends, its increasingly important role.

空气制动系统是列车的重要组成部分，在列车提速和重载运输的发展趋势下，其作用越来越重要。

The vehicle brake system is an important component of the automobile and plays an important role in traffic safety.

摘要制动系统是汽车的一个重要组成部分，对汽车行驶安全起着重要的作用。

ABSTRACT: A Rockwell PowerFlex7000 Variable Frequency Drive is used in JiuZHou Electric medium voltage drive test bay as the converter. Because of it belong to the current source drive, it has the function of the four quadrant, it can achieve the energy feedbackmake the motor brake,also has the advanced vector control technology, so it can achieve all kinds of load test, there are no other drives can replace it in simulate motor load. PowerFlex7000 drive has ability to achieve the full load test before the drive leave factory.

摘 要：罗克韦尔PowerFlex7000变频器在九洲中压变频实验站测试系统中作为变流逆变器使用，由于本身属于电流源型变频器，具有四象限运行功能，能够实现能量的回馈和对电机的制动，先进的矢量控制技术，可以实现各种复杂多变的负载特性，在模拟电机负载方面起到了其他变频器无可替代的作用，实现了变频器出厂之前的满负荷测试。

Your quadriceps do the bulk of the braking and be overworked without you being aware of it.

你的四头肌起到制动的作用，如果重视不够将会使它过度"劳累"。

Affected by the hydraulic pressure sent from the vitta, the wheel cylinder piston pushes the friction plates and makes them press down on brake disc so friction braking can be achieved. The working principle is like griping a rotaty plate with a clamp and making it stop.

分泵的活塞受油管输送来的液压作用，推动摩擦片压向制动盘发生摩擦制动，动作起来就好像用钳子钳住旋转中的盘子，迫使它停下来一样。

Result: Joint immobilization could evoke arthrochondritis decay, while movement could serve to protect and repair decayed arthrochondritis.

结果：关节制动可诱发关节软骨退变，运动对退变软骨具有保护和促进修复作用。

This article puts forward three basic principles for the constitution of the government interfering efficiency law system, that is , fair competition, balanceable harmony and the government interfering action optimization.

因而对经济的发展起着制动性作用。

The engine main circuit have to be gurranteed drawing the torque of electric motor and rotation speed wholly to do regulateing of independence ,But also possess extensive setting range SS7's mould electric locomotive adopts Quan Kongqiao and semi bridge accuseeing series connection to make up the monophase bridge style commutation electric circuit ,The coil power supply is encouraged against the stringtrain by the electric motor the drawing armature to 3 parallels operation ,Still there is an excitation commutation bridge ,He encourages the coil power supply with 3 electric motors drawing together to the series connection ,Moreover has one another accuses the regulating action .

机车主电路必须保证牵引电动机的转矩和转速都可作独立的调节，而且要有宽广的调节范围。SS7型电力机车采用一个全控桥和一个半控桥串联组成单相桥式整流电路，向3台并联工作的牵引电动机电枢与串励绕组供电，还有一个励磁整流桥，向串联在一起的3台牵引电动机他励绕组供电，并具有相控调节作用。可以实现机车无级调速和无级削磁。SS7型电力机车采用再生制动方式，再生制动时，牵引电动机作直流发电机工作，并且将电能馈送回接触网，此时电力机车相当于一个移动的发电站。

The control of an electromagnetic valve in the ABN brake chamber forces the spring to vibrate at a frequency of 18 times per second while braking, and also with certain natural frequency reciprocating motion.

利用停易ABN制动气室弹簧的振动及电控装置控制电磁阀激振，迫使气室弹簧在整个制动过程中不但以每秒18次的自振频率振动，同时又以一定的固有频率往复运动，利用弹簧的储能作用，将刹车时产生的声能和热能用弹簧的势能和动能来置换，从而达到降低制动噪声、温度和磨损的目的。

The rubber diaphragms used by train brakes could pass the air pressure in the air brake distribution valve , and straightly affected the brake property and running safety.

铁道车辆制动机的橡胶隔膜在空气制动分配阀中起传递空气压力的作用，直接影响制动性能和行车安全。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。