The characteristics of negative temperature state system were discussed, and compared with the image-forming behavior of thin convex lens.
分析了处于负温度状态系统的特征，并将其与薄凸透镜成像特征作类比，阐明了应用类比法讲授负温度状态的优越性。
The strength of negative temperature concrete is tested with supersonic-rebounding method. The results state that the method is suitable to test the strength of negative temperature concrete.
本文将超声回弹综合法用于负温混凝土强度检测。结果表明，超声回弹综合法可以用于检测和评定负温混凝土的强度。
The strength of negative temperature concrete is tested with supersonic-rebounding method. The results state that the method is suitable to test the strength of negative temperature concrete.
本文将超声回弹综合法用于负温混凝土强度检测。结果表明，超声回弹综合法可以用于检测和评定负温混凝土的强度。
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