Thyroid-Gland
发表于 2025-3-25 06:48:45
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BINGE
发表于 2025-3-25 09:22:14
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Measured
发表于 2025-3-25 14:20:49
Introduction to History of Polyolefins,, the naturally occurring polyolefin, elaterite and related bitumins have been known for centuries. Of course, the homologous alkane series has been known for many decades but even the solid paraffim waxes were not considered to be polymers.
Habituate
发表于 2025-3-25 19:32:11
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MOT
发表于 2025-3-25 20:49:23
An Overview of Polypropylene Resins,e market place today. From its introduction as a commercial plastic in 1975, it has grown to a 2.92 billion-pound-per-year business in 1979. The growth rate of polypropylene resin will reach 4.19 billion pounds per year by 1985. The rapid growth of polypropylene is due to its versatility, wide applicability, and low cost.
ATP861
发表于 2025-3-26 00:26:02
Ethylene Copolymer Ionomers,for the physical properties of ionomers is given. Importance of these properties in various end use applications is then demonstrated. Finally, recent developments in Surlyn. ionomer technology are discussed.
EVADE
发表于 2025-3-26 08:13:04
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Diastole
发表于 2025-3-26 10:40:57
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Axillary
发表于 2025-3-26 15:44:16
The Discovery of Polyethylene and Its Effect on the Evolution of Polymer Science,f Wight and Mainland England was in use. Similarly with ICI’s other development Perspex (Polymethylmethacrylate) and Du Ponts invention of Nylon, all of which occurred about the same time as Polyethylene, were also available within four to five years.
协奏曲
发表于 2025-3-26 18:12:47
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