Results Using the established mathematical model, with some data of an antiaircraft tubes, critical crack and initial permissible crack size of the antiaircraft gun tube were worked out.

结果利用建立的数学模型，结合某高炮身管的有关数据，计算出了该炮身管的临界裂纹和初始允许裂纹尺寸。

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This program is critical because as we looked at the data from our past entries, we saw that although 75% of our initial entries were coming from outside of the United States, fewer than 25% of them made it to the Semi-Finals.

FORBES: Student Innovators Save the World: Part 2