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Method and device for roasting seeds in overheat steam
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Preventive fence against proliferation of plankton in lake water
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Preventive method and device against proliferation of plankton in lake water
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Method and apparatus for purifying liquid containing plankton
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Incinerator
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Vibration treating device with scraper
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Method for incinerating waste liquid containing nitrogen compound
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Culture of plant and apparatus therefor
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Freshness retention of vegetable and fruit and apparatus therefor
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Sealing fixing device for pipe body
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