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Ultra Violet Rays and the Ozone - iss.k12.nc.us.ppt
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Generation of Pulsed Ultra-Violet and Mid-Infrared Super.ppt
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Inelastic Ultra Violet Scattering with eV energy resolution.pps
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The ambitious violet演讲.ppt
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KENT ULTRA MENTHOL.ppt
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Teleport Ultra软件在快速建站中的应用.ppt
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Design and Prototyping of Micro Centrifugal Compressor for Ultra Micro Gas Turbine(22P).ppt
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赛默飞液相色谱质谱联用仪TSQ Quantum Ultra&Access MAX培训教程.pptx
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超高温钻井液技术研究_Study_on_Ultra_HT_Drilling_Fluid_Technology_21st_of_Sep_Rev_0211.ppt
- During certain geologic ages, when the climate was uitable, petroleum began as organic material derived from plants
and animals which grew in abundance.As these organisms went through their cycles of growing and dying, buried organic material slowly decayed and became our present-day fossil fuels: oil,gas, coal and bitumen. Oil, gas and bitu-menwere dispersed in the sediments (usually clay-rich shales). Over millions of years, these organic-laden shales expelled their oil and gas under tremen-dous pressures from the overburden.The oil and gas migrated into permeable strata below or above them, then migrated further into traps that we now call reservoirs . It’s interesting to note that the word “petroleum” is derived from the Latin words for “rock” (petra) and“oil” (oleum ), indicating that its origins lie within the rocks that make up the earth’s crust.
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Photocatalytic degradation of Ethyl Violet dye in aqueous soluti(PPT-34).ppt
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向豆丁求助:有没有Ultra-Violet?