Based on the relationship between crosssection variety and resistance of sample, a new formula was put forward to calculate the instantaneous corrosion rate of aluminum alloy.
Factors influencing the tensile strength of polymerizer head sample were introduced, which included the sampling position, sampling direction, sampling quantity and the crosssection shape of sample.
介绍了影响聚合釜封头试样拉伸性能的因素：取样部位、取样方向和取样数量及试样的横截面形状。
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WT5BZ Based on the relationship between crosssection variety and resistance of sample, a new formula was put forward to calculate the instantaneous corrosion rate of aluminum alloy.