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The main thing sex of model 膠
The main thing sex of model 膠 Specific gravity (the proportion of Density) model 膠Specific gravity is the ratio of density of water of 與 of density of 質 pointing to content, place 謂 density is to...
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Use electric equipment of automatic transfer switch correctly
  summary: The article introduced electric equipment of automatic transfer switch (the development course of ATSE) , elaborated electric equipment of automatic transfer switch (the definition of ATSE)...
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Air conditioning of delay time switch " macrobian "
After firm open air conditioning, even if do not need to use air conditioning, also do not want to be shut immediately, had better let air conditioning run above 15 minutes to close again machine, if s...
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