The test demands on appearance, thickness, sealing quality, light and high temperature resistance and alcohol resistance were suggested.
对氧化膜的外观、厚度、封闭质量、耐光照及耐高温性、耐醇性提出了检验要求。
The failure reason of the aluminum alloy tube was investigated by macroscopic and microcosmic appearance observement, quality of material test, the stress analysis.
对失效铝合金管进行了宏观形貌观察、材质检验、 断口微观形貌观察及应力分析。
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