发热器电阻,灯丝电阻

VOA慢速英语2011--How to Make Your Own Solar Water Heater

Technology Report - How to Make Your Own Solar Water Heater This is the VOA Special English Technology Report. Solar water heaters are used around the world and are not very difficult to build. The system we are going to describe is based on a design

发表于:2018-12-16 / 阅读(59) / 评论(0)

2011年VOA慢速英语(四)月

DEVELOPMENT REPORT – How to Make a Solar Water Heater

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

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农业与发展

VOA标准英语2008年-Lord's Resistance Army Warns Against UN-Backed

The spokesman for the Lord's Resistance Army says Congolese forces and U.N. peacekeepers in Congo Kinshasa are preparing to move against the rebel group, which has yet to sign a peace deal to end a 20-year reign-of-terror in the region. VOA Correspo

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VOA标准英语2008年（九月）

VOA慢速英语 Development Report - Making a Solar Water Heater

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

发表于:2019-01-11 / 阅读(60) / 评论(0)

VOA慢速英语2009年（四）月

实用英语口语1

I'll get right on it .我现在就去办。 I'm busy with writing the year-end report.I forgot to buy the Christmas cards.I'll get right on it.刚才我忙着写年终总结，忘了买圣诞节。我这就去办。 Yes,you should get right on it .是的

发表于:2019-02-13 / 阅读(35) / 评论(0)

实用英语

最实用的句子

I'll get right on it .我现在就去办。 I'm busy with writing the year-end report. I forgot to buy the Christmas cards. Ill get right on it.刚才我忙着写年终总结，忘了买圣诞卡。我这就去办。 Yes, you should get right on it .是

发表于:2019-02-26 / 阅读(61) / 评论(0)

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-phrenia

abstract mathematical machine

automatic storage and retransmission equipment