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1.The engineer used a strain tube to measure the stress in the material.
工程师使用拉杆管来测量材料中的应力。
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2. The scientist discovered that the strain tube could be used to detect changes in the environment.
科学家发现拉杆管可以用来检测环境的变化。
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3. The construction workers were using strain tubes to reinforce the concrete slab.
建筑工人正在使用拉杆管来加固混凝土板。