Research effect of different ROL on pulling strength of QFP solder joint mainly in order to get the proper range of ROL.
主要研究了不同氧含量对QF P引脚焊点拉伸强度的影响，得到一个最佳的氧含量范围。
Research effect of different ROL on pulling strength of QFP solder joint mainly in order to get the proper range of ROL.
主要研究了不同氧含量对QF P引脚焊点拉伸强度的影响，得到一个最佳的氧含量范围。
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