Simple calculation formula of MCT turning off current is derived.
推导了MCT关断电流的简单计算公式；
A simple calculation formula of the horizontal bearing capacity is deduced according to the model.
水平承载力公式按照三维空间问题进行推导，形式简单，计算方便，有较强的实用价值。
The anthropometry of the defects in the axillary skin and area-dividing work of its skin were made. A simple calculation formula of the defects has been found.
作者也试对腋部皮肤进行分区和其缺损的术前预测，并提出了一个简单的预测公式。
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