| http://www.w3.org/ns/prov#value | - The inert hydrocarbon medium used in the preparation of the olefin polymerization solid catalysts of the present invention include concretely aliphatic hydrocarbons such as propane, butane, pentane, hexane, heptane, octane, decane, dodecane and kerosine; alicyclic hydrocarbons such as cyclopentane, cyclohexane and methylcyclopentane; aromatic hydrocarbons such as benzene, toluene and xylene; halog
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