单词:solar heating rate
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[00:06.79]Lesson 33 1 Read and act [00:15.12]Do you think the air in Beijing is bad? [00:19.77]Yes, it's often quite dirty. [00:24.03]But don't you think it's better than it used to be? [00:28.79]Well,I can't say for sure.I've only lived here for a y
DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o
This is the VOA Special English Development Report. Solar water heaters are devices that use energy from the sun to heat water. Solar water heating is used around the world. An example of a rooftop solar water heater being built in South Africa The
Solar Cooker Reduces Smoke Pollution Deaths 太阳能灶可降低烟气污染导致的死亡 Solar power technology could help to reduce deaths caused by household pollution. 太阳能科技有助于降低由家庭污染造成的死亡。 Pollution t
Feed-in tariff program relies on funding from electricity users, not taxpayers Tom Banse | Olympia, Washington 23 March 2010 Proposed solar installation and wind turbine at Gas Works Park in Seattle. National and state governments around the world ha
India seems to excel at making things smaller and cheaper. The $2,500 car and the $35 computer are just two of the country's latest innovations. Now, India increasingly is focused on low-cost solar technology. The front lines of that effort are seen