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Drilling fluid helping to protect oil-gas bed
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Active noise reduction equipment for natural gas booster station
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Water-based drilling fluid
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High-density saturated salt water drilling fluid
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Preparation method for oxidant in H20/CH2COOH3 catalytic oxidation desulfurization technology of straight-run diesel oil
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Synthetic method of homopolymer scale inhibitor
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Culture medium for liquid fermentation of edible and medicinal fungi
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Method for preparing chelating polymer monomers used for producing scale remover
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Shake flask fermentation method for preparing calvatia gigantean liquid fermentation culture medium
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Incoming line protecting and monitoring device for safety monitoring system of traction substation
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Process for detecting inner and outer walls of oil-well pump
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Method for preparing binary copolymer
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