单词:fuel-cell-system standard thermal efficiency
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By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The
Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa
This is the VOA Special English Economics Report. With oil around one hundred dollars a barrel, this may be a good time for a short history of petroleum. Petroleum has been important since ancient times. The Greek historian Herodotus told of its use
Bacteria Discovered To Recharge Cell Phone A microbe called Rhodoferax Ferrireducens,found in the mud at Oyster Bay,Virginia,has been discovered to transfer electrons directly onto an electrode
Chinese authorities have enacted a new regulation for car makers from April 1. All domestic and foreign auto makers that operate in China now run under a two-credit system, which consists of the index of Car Average Fuel Consumption - or CAFC - and t
For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea
SCIENCE REPORT — March 27, 2002: New Stem Cell Study By Mario Ritter This is the VOA Special English SCIENCE REPORT. Researchers at an American medical center say special stem cells in normal human
SCIENCE REPORT — February 7, 2002: Fuel Cell Cars By Mario Ritter This is the VOA Special English SCIENCE REPORT. The United States Secretary of Energy, Spencer Abraham, has announced a program to d
EXPLORATIONS -February 27, 2002: Fuel Cell Cars By Mario Ritter VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell a
Chinas National Development and Reform Commission has announced that the price of gasoline and diesel will be raised along with upgrades to fuel quality, in order to curb the countrys air pollution. 中国发改委已经公布,汽油和柴油价格将
By Mil Arcega Washington, DC 27 July 2006 watch Green Vehicle report The cost of gas at the pump keeps going up The high price of gasoline is changing the way we drive. And there are more concerns about the environment. Car manufacturers say those f
By Ernest Leong Washington, DC 04 February 2008 It is winter in Washington, people bundled in heavy coats to shield themselves from the cold weather. Many seek refuge at indoor events. The recently held Washington Auto Show - where visitors got an up
PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat
President Barack Obama has announced Tuesday the toughest-ever fuel efficiency and emissions standards for vehicles sold in the United States. It is the first U.S. national limit on greenhouse gas emissions. President Barack Obama at the White House
AS IT IS 2016-04-22 Japan Investigates Mitsubishi for Fuel Test Cheating 日本三菱就燃效测试作弊接受调查 It is not just Volkswagen trying to manipulate testing of its cars. This time it is a Japanese company, Mitsubishi. The Japanese au
By Mike O'Sullivan Los Angeles 16 November 2007 Auto makers who are showcasing their latest models at the Los Angeles auto show are expanding product lines in the hope of staying competitive in a changing market. Mike O'Sullivan reports, carmakers fr
China's General Administration of Quality Supervision, Inspection and Quarantine has pledged to keep 92 percent of the sample product quality above the state standards while reducing accidents of elevators and other mechanical devices. Improving the
China's General Administration of Quality Supervision, Inspection and Quarantine has pledged to keep 92 percent of the sample product quality above the state standards while reducing accidents of elevators and other mechanical devices. Improving the
PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is
The State Council, China's cabinet, has released its timetable to upgrade fuel quality nationwide before 2017. The new standard for petrol and diesel, with sulphur content within 10 parts per million, is expected to be in practice nationwide by 2017.