closed-tube test

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1.	封管试验下载_0KB_ ... closed system 封闭系统 closed tube test 闭管试验；封管试验 closed-ring hydrocarbon 闭环烃 ... www.docstoc.com
2.	闭管试验下载_0KB_ ... closed system 封闭系统 closed tube test 闭管试验；封管试验 closed-ring hydrocarbon 闭环烃 ... www.docstoc.com

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