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1.The company conducted a tapered type cracking test on the new material to ensure its durability.
该公司对新材料进行了缩颈型裂纹测试，以确保其耐用性。
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2.During the testing process, the engineer noticed that the sample had undergone tapered type cracking.
在测试过程中，工程师注意到样品已经经历了缩颈型裂纹。
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3. The results of the tapered type cracking test were crucial for making informed decisions about the product's lifespan.
缩颈型裂纹试验的结果对于做出关于产品使用寿命的明智决策至关重要。