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| Based on signal from carbon fiber composite defects such as lamination, hole, looseners in ultrasonic testing, this paper performs wavelet packet transform on the ultrasonic signals to extract statistics of approximation coefficients and detail coefficien |
中文意思：
摘要本文以碳纤维复合材料常见缺陷分层、孔隙、疏松的超声波检测缺陷信号为研究对象，对超声波检测信号进行小波包变换，提取包含信号绝大部分能量的近似系数波形特征及细节系数的统计量作为样本的特征值。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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Based on seniority, they would be Randy Johnson and Mike Mussina. But based on the evidence, Chien-Ming Wang has to be one of them.
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Based on sense and creativity, ROGY refuses mediocrity, persists and innovates, keeps meeting the demand for clients, and pursues the success of clients.
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融际投资“判断力,创造力”的观念,拒绝平庸,矢志创新,不满足客户的认可,更追求客户的成功。 |
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Based on several actual cases, the temperature control measures for roller compacted concrete (RCC) gravity dam and arch dam such as structural jointing for construction; lowering of concrete placing temperature; water pipe cooling; surface insulation; in
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Based on several main scenes in Native Son, this essay analyzes the process of how the central character Bigger Thomas develops from a naturalistic victim to a realistic new Negro, during which he pursues his dream, expresses his suppression out of instin
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Based on signal from carbon fiber composite defects such as lamination, hole, looseners in ultrasonic testing, this paper performs wavelet packet transform on the ultrasonic signals to extract statistics of approximation coefficients and detail coefficien
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摘要本文以碳纤维复合材料常见缺陷分层、孔隙、疏松的超声波检测缺陷信号为研究对象，对超声波检测信号进行小波包变换，提取包含信号绝大部分能量的近似系数波形特征及细节系数的统计量作为样本的特征值。 |
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Based on simulations, the paper gives a comparison and discussions of both models.
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Based on sincerity, require university students should have first-class professional ethics while learning professional knowledge well, through believing in a religion to breed sincerely make students form the fine quality of sincerity.
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