The fat in the decomposition process, will release the acidic material.

脂肪在分解的过程中，会释放酸性物质。

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ABSTRACT: tannin, which comes from grape skin and grape PIP, is an acidic material and the soul of red wine. It build a large system for wines. Without tannin, red wine couldn't be wine.

摘要：单宁是一种酸性物质，主要来源于葡萄皮和葡萄籽，它是红葡萄酒的灵魂，其为葡萄酒建立了宏大的“骨架”，也是成就红葡萄酒的幕后功臣。

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Analyze features of corrosion of pipeline for high acidic crude oil of atmospheric and vacuum distillation unit, probe major principle for selection of piping material.

分析加工高酸值原油常减压蒸馏装置管道腐蚀的特点，探讨其主要管道的选材原则。

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