Based on the burn-out incident of the mutual inductor due to its internal wet-ting, necessity of the preventative oil test in production is presented.

通过互感器内部受潮烧毁爆炸案例，阐述预防性油试验在生产运行中的必要性。

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Olive oil is well known as a healthful and tasty alternative to many other cooking oils, with heart-healthy and cancer preventative properties.

是非常知名的健康美味的食品，它可以取代多种烹饪用油。

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This paper introduces the sealing and leakage preventative of oil tank, driving shaft, control mechanism, oil cylinder, spool, etc. in particular.

本文着重介绍了油箱、传动轴、操纵机构、油缸及滑阀等部件的密封防漏。

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