本文认为GB/T 13096.2-91中计算弓形试样截面惯性矩的公式有误，同时指出在某些手册中有关计算公式也有误。
This paper believes that the calculating formula of moment of inertia for bow-shaped test piece in GB/T 13096. 2-91 is wrong because of printing error.
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。
Factors influencing the tensile strength of polymerizer head sample were introduced, which included the sampling position, sampling direction, sampling quantity and the cross section shape of sample.
针对铝合金腐蚀平均速率与瞬时速率的差异，根据腐蚀过程中试样横截面的变化与欧姆电阻的对应关系，建立了新的腐蚀速率计算方法。
Based on the relationship between cross section variety and resistance of sample, a new formula was put forward to calculate the instantaneous corrosion rate of aluminum alloy.
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