By use of caustic washing electrofining method to decrease the acidity of straight run diesel oil,serious diesel oil emulsification problem can occure often.

采用碱洗电精制方法降低直馏柴油酸度时,往往会产生严重的柴油乳化现象。

The os trigonum is an accessory bone of the foot, locates at the posterolateral tubercle of the talus, and occures in about 7% of population.

摘要附三角骨位于距骨之后外侧节，是脚部的附属骨之一，出现于百分之七的正常人中。