取样横截面
Sampling cross-section
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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