1) STTFD(the scale transform in time-frequency distribution plane)
STTFD(时频分布尺度变换)
2) frequency scale transformation
频率尺度变换
1.
To improve beamforming under low signal-to-noise ratio,a method based on stochastic resonance(SR)in a bistable model is investigated by using a frequency scale transformation method.
为了改善低信噪比下波束形成的性能,从双稳态随机共振模型出发,提出了利用频率尺度变换,将随机共振和波束形成结合起来的算法。
3) time scale transformation
时间尺度变换
1.
A new fast discrete time scale transformation algorithm is presented and an appropriate expression of discrete time scale transformation is supplied.
提出了一种新的快速离散时间尺度变换算法。
2.
The basic objective of time scale transformation is to compress or expand the signal in time field while keeping the same amplitude.
时间尺度变换就是使信号在时域上压缩或扩展而幅度不发生变化 。
4) time-scale transform
时间-尺度变换
5) time-frequency(scale)analysis
时一频(尺度)分析
6) size-frequency distribution
尺频分布
1.
Based on the hypotheses of the fractal distribution of crack sizes in brittle materials and the weakest link pinciple, the relationship between the fractal dimension of the size-frequency distribution of cracks and the Weibull modulus is derived.
基于脆性材料中裂纹尺度的分形分布和最弱环原理的假设，导出了裂纹尺频分布的分形维数Ｄ与经典统计强度理论中Ｗｅｉｂｕｌｌ模量ｍ之间的关系，揭示了ｍ的几何实质。
补充资料：ST
分子式C9H9N3O2S2，分子量259.19。简名ST，商品名消治龙。白色晶体或结晶粉末。在空气中稳定，遇光变色。熔点200～204℃。难溶于水，溶于丙酮、稀盐酸、氨水和碱溶液。主要用于治溶血性链球菌、脑膜炎球菌、肺炎球菌等感染性疾病。可由2-氨基噻唑与氯化对硝基苯磺酰缩合，再经还原而制得。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条