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10-18
Numismatic Collection collection Coins
China collection
10-17
Source: Steam Turbine Energy Control Power Technology 1, what is DEH, why use DEH control? The so-called DEH is a digital electro-hydraulic control system for steam turbines, which is controlled by a computer...
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Glutinous rice cakes collection glutinous rice
tidy up collection haircut
cornmeal corn collection
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Decorative paintings ornament collection originality