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 | |/ //  \ \\/ // |      \\  \ \\/ //  /_   _// 
 | ' //    \ ` //  |  --  //   \ ` //   `-| |,-  
 | . \\     | ||   |  --  \\    | ||      | ||   
 |_|\_\\    |_||   |______//    |_||      |_||   
 `-` --`    `-`'   `------`     `-`'      `-`'

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發送短信 : PHYSICO-CHEMICAL FACTORS AFFECTING THE PROPERTIES OF NATURAL AND MODIFIED RUBBERS