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efficiency — ways to meet our needs using the least amount of water. One popular approach is the installation of high-efficiency toilets to replace old, water-intensive ones, which c

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2017619-,“ with the size of the whole earth,the highest mou.” ,,, Earth auger is a kind of digging tools suitable for building fast into the hole in foundation engineering construction machinery. Its construction of high efficiency, is the electric powe

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A novel process for recovering Rare-Earth Elements (REEs) from waste phosphors has for low-cost and high efficiency of recycling waste phosphors on a large industrial scale.

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think life on earth will(A) in 100 years? More comfortable ?More high-t

What do you think life on earth will(A) in 100 years? More comfortable ?More high-tech? Maybe. But many scientists see a different future. (B) They say that by the year 2100 the e

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。 What is the sky? Where is it? How high is it? What lies

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BEIJING, April 26 (Xinhua) -- China sent high-definition earth observation satellite Gaofen 1 into space shortly after noon on Friday, marking the start of a program that will substan


with the size of whole earth,the highest mountain does not seem high at all2014-10-26 ©2017 :[email protected]

Route towards low cost-high efficiency second generation solar cells:

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High Definition Earth Viewing cameras - Wikipedia

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man are devoted to digging. Let's take look at six of the biggest monsters of earth movin where this three-story-high behemoth set a production record, excavating 9000 tons of e