To extract the gear crack fault weak feature of locomotive running gear box on complex background, a new method of ensemble empirical mode decomposition (EEMD) and 1.
针对复杂背景下机车走行部齿轮箱齿轮裂纹故障微弱特征的提取问题，提出了总体平均经验模式分解(EEMD)与1。
The relation of law of the fatigue crack extending and feature of macro-profile is discovered, which provides a new method for the life estimation of the brake disc.
发现裂纹剖面宏观形貌特征与制动盘疲劳裂纹扩展规律之间存在一定的关联，为制动盘寿命评估提供了新的思路。
Yellow River sullage porous brick can substitute for clay brick and be used as bearing wall material based on analysis of masonry compression strength, crack development and breakage feature.
从砌体抗压强度、裂缝开展以及破坏特征等方面分析，黄河淤泥多孔砖可以替代黏土砖用作承重墙材。
The feature of macro-profile is analyzed, and the crack initiation and extending mechanism of brake disc is discussed.
分析了制动盘裂纹剖面的宏观形貌特征，并对制动盘裂纹萌生和扩展机理进行探讨。
Because of the girder's structure, it is very difficult to obtain its status signal and extract its crack fault feature.
因振动筛支撑大梁结构特点，其状态信号的拾取和裂纹故障特征提取困难。
Oil and gas pipelines have been aged as time going on. The pipeline crack is an important feature, which influences the integrity of the pipeline.
油气管道随着服役时间的增加正趋于老龄化，管道出现裂纹现象是重要特征之一，它影响了管道的完整性。
The experimental results show that as far as crack resistance of concrete is concerned, the surface feature of coarse aggregate is more sensitive than aggregate shape.
试验结果表明：集料的表面特征对混凝土抗裂性的影响比集料的颗粒形状更为敏感。
According to the observed morphology on the fracture surface, the fracture surface had pseudo-cleavage feature and plastic tearing feature in the last stage of crack growth in high magnification.
高倍下观察断口发现有准解理特征，在裂纹扩展最后阶段有塑性撕裂特征。
Thirdly, a new method to analyze the signal by wavelet transform is presented. This method can efficiently extract the feature of damage and can precisely predict crack.
小波变换作为一种新的信号处理方法，可以有效地提取损伤特征并能准确发现裂纹。
The rock salt, which is a special rock mass, possesses some good physical characteristics such as the good rheological feature, the less crack, the lower porosity, and lower permeability, etc.
岩盐是一种特殊的岩体，具有良好的流变性、裂隙少、孔隙率低、渗透率低等优良的物理性质；
The rock salt, which is a special rock mass, possesses some good physical characteristics such as the good rheological feature, the less crack, the lower porosity, and lower permeability, etc.
岩盐是一种特殊的岩体，具有良好的流变性、裂隙少、孔隙率低、渗透率低等优良的物理性质；
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