The relationship between total polar component in oil and its dielectric constant was analyzed. the deterioration of oil with heated time and heated temperature was studied.

分析了油中的极化成分总含量与油的介电常数的关系，结果表明：提高油温、延长加热时间或长期存放都会使油的介电常数增加，从而导致油质量的恶化。

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As there is certain response time for hydraulic valve startup, constant pump has to bear the momentary extremely high pressure impact with a high risk of oil pipe explosion.

液压阀开启有响应时间，定量泵系统启动时，瞬间压力冲击特别大，油管容易爆裂。变量泵启动时只有3mpa左右的待命压力，消除了爆管的隐患。

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The Mediterranean diet is characterized by a nutritional model that has remained constant over time and space, consisting mainly of olive oil, cereals, fresh or dried fruit and vegetables, a moderate amount of fish, dairy and meat, and many condiments and spices, all accompanied by wine or infusions, always respecting beliefs of each community.

UNESCO: Culture