跪求英语高手翻译

Wuhan-Guangzhou high-speed passenger line and high-speed passenger professional Cheng opened the West, China's record speed rail Leap 350km / h high-speed rail operators in the world record, but also passengers on this journey comfort are increasingly high requirements. High Speed Train at high speed through the tunnel and will be car, EMU pressure wave by the tunnel effect, the body surface of a strong positive pressure and negative pressure of the shock, the shock wave the car through the ventilation system leading to pressure drop, when air pressure drop rate is too fast, it will make people tinnitus ear, ring expansion and earache symptoms. In order to solve the high-speed train through the tunnel and will be car, passenger car such symptoms appear, we type CRH2 EMU for control systems of ventilation, gas installation has to provide fresh air and exhaust features, ventilation devices used two-way fan principle, from a two-frequency control of motor output shaft driven two high-voltage high-speed centrifugal fan EMU passenger compartment of the inlet and outlet. The new car is equipped with air through air volume adjustment plate to the air side, the high pressure air supply fan quilt inhalation, were taken to two air conditioning units in guest room return air to be inhaled high-pressure exhaust fan into the ventilation unit with motor internal passages in the cooling fan motor from the regulator board after the discharge outlet car. Normal operation, it can guarantee the wind emitted from the room air flow and the amount added with the new air damper, thus ensuring a constant pressure off the indoor air. The design requirements for the ventilation system installed on the throttle in the ventilation channel through the car inside and outside the pressure sensor to detect high-speed train through the tunnel, when the interior pressure decreases, the MCU control throttle opening to regulate the car the discharge air volume, pressure to ensure that the car does not affect passenger comfort.

Wuhan-guangzhou passenger special line and zheng west passenger railway, professional leaps 350km/h operations per set the world record, but in high speed railway passenger on the journey comfort requirements more and more is also high. High-speed actuation vehicle speed through the tunnel and pulses in/under pressure, the function, the tunnel body surface wave produced strong pressure and negative pressure of shock wave, the air inside the system caused by pressure drop, when air pressure drop speed fast, will make the human ear appear tinnitus, expansion and ear pain symptoms. In order to solve the high-speed trains passing through a tunnel and passenger vehicle, the symptoms appear, we train CRH2 type ventilation control system is studied, and provide fresh air and gas discharge waste gas function, ventilators, adopts two-way fan by a frequency conversion control principle of the shaft motor drive two pairs of high speed centrifugal fan on the passenger trains the intake and exhaust. Fresh air outside the car after adjusting plate with the contralateral to the wind, high pressure air suction fan, air conditioning units, sent two relays in return is high exhaust fan motors with inhaled, enter the ventilators, cooling fan passages from the adjustment of the plate after motor vehicle exhaust outlet. During normal operation, it can guarantee the wind from the room air exhaust air is fresh and complement, thus ensuring the air pressure inside the classroom. The design requirements for the ventilation system is installed on the throttle air passages in the car, by inside and outside pressure sensor, the detection speed through train tunnel, when interior pressure decreases, and single-chip microcomputer control, adjust the throttle discharge air inside the car, so as to ensure that the pressure change does not affect the passenger comfort.