简单说明了有关变压器温升的一般特性，并对一台大型电力变压器现场油顶层温升的推算进行了介绍和分析。
The characteristics of transformer temperature rise is described briefly, and the top oil temperature rise calculation of a large power transformer on-site is introduced and analyzed.
BP及Valero所发布的炼厂利润指标，以及由期货价格推算的一般裂解价差，均为将原油炼制为油品当中所取得的毛利。
Refining markers published by BP and Valero as well as the generic crack spreads calculated from futures prices are all for the gross margin obtained from turning crude into products.
一般可以用中国剩余定理或者递推算法等方法给出一次同余方程组的解法。
The solution of system of linear congruence equations can be provided by the Chinese remainder theorem or recursive process.
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