The Barrier Penetration Model has been used to calculate the heavy ion fusion cross section and it does give a good description of the experimental data in existence.

本文利用势垒穿透模型计算重离子融合反应截面，我们发现理论计算结果同现有的实验数据符合得相当好。

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In basis of analyzing the features of the conventional arc welding technology, a DC low-frequency plasma welding power with fusion penetration is selected as the heat source for metal forming.

本课题在分析常规弧焊技术特点的基础上，选取熔透式低频直流等离子弧焊电源作为成形的热源。

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Based on the analysis of site welding, the main welding defects are lack penetration, lack fusion, slag inclusion and porosity.

从现场施工情况分析，焊接的内部缺陷主要有未焊透、未熔合、夹渣和气孔等几种。

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However, this could prove conservative if penetration rates of its recently launched Fusion Series AOI systems, which provides significantly better defect detection and minimizes false alarm rates versus other models, trend stronger than expected.

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