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1.The drill-stem test is used to determine the strength of the material.
钻头测试用于确定材料强度。
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2. During the drill-stem test, the sample was exposed to high pressure.
在钻头测试期间，样品暴露于高压下。
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3.The drill-stem test results showed that the material had excellent resistance to wear.
钻头测试结果显示，该材料具有极好的抗磨损性能。