以下为句子列表：
英文: 52 frequency index: A one-dimensional or two-dimensional index associated with a transform coefficient prior to an inverse transform part of the decoding process.
中文: 频率索引：变换系数的索引值，该索引值被送到反变换部分进行解码处理。
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英文: A comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC × GC/TOFMS) method has been developed for the characterization of phenols in mainstream cigarette smoke condensate.
中文: 摘要建立了卷烟主流烟气粒相物中酚类化合物组成研究的全二维气相色谱／飞行时间质谱方法，并用所建立的方法对一种市售混合型卷烟主流烟气粒相物中的酚类镏分组成进行了表徵。
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英文: A general and flexible approach for constructing two-dimensional multi-channel morphological wavelets was presented, which was based on templates and lifting scheme.
中文: 摘要基于提升方案和模板，提出一种通用方便的二维多通道形态小波构造新方法。
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英文: A large planar microphone array,which consists of 111 microphones,was successfully applied to obtain a two-dimensional mapping of the sound sources on a landing aircraft.The focus of study in this paper is on the landing gear noise source.The spectra,dire
中文: 应用由111个传声器组成的平面传声器阵列对当前流行的民用客机进场着陆过程中的机体噪声源进行了实验测量，本文对七架窄体客机和七架宽体客机的起落架噪声进行了分析，得到了起落架噪声的频谱特性、指向特性和声级变化.研究发现，起落架噪声的频谱是由宽频随机噪声与一些较为明显的单音噪声源组成，起落架噪声的指向性类似于一个水平放置的偶极子.不同飞机起落架噪声的声级相差较大，这说明可以通过重新结构设计降低起落架噪声。
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英文: A new analysis method is developed for the floating-debris' accumulation form in the reservoir based on a two-dimensional flow model according to the kinematic characteristics of the floating-debris.
中文: 摘要针对水库库区漂浮物的运动特点，建立了基于平面二维水流数学模型分析漂浮物堆积形态的方法。
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