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Abstract Recently, the development of the photovoltaic industry has made historic progress! T ......
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The so-called sharpening not mistakenly cut firewood workers, we use the slurry pump before instal ......
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1. Downy mildew: Copper hydroxide, copper rosinate, propamocarb, mancozeb, e ......
Tiles can be said that the decoration essential hardware requirements, which occupies a rel ......
Design and Analysis of Underground Water Supply Pipe Cast Iron Pipeline Design Li Yongkang Zhuang We ......
Composite: Ferrite Magnet ......
The effect of the wind is roughly as follows: 1. The wind causes the air to bring precipi ......
Abstract In the context of a 19% decline in global cross-border investment in 2018, Chinaâ ......