This paper discusses the preprocessing procedures before power spectrum analysis of pulse transit time(PTT) variability,including the uniform resampling and removing the non-stationary trend.
研究了脉搏传播时间(PTT)变异性谱分析的预处理过程,提出了以平均心动频率作为重采样率的均匀重采样方法和基于平均心动频率控制的小波去趋势(WFC,wavelet detrend based on frequency control)方法。
The Study of Properties of PTT/cotton Blended Yarns and Knitted Fabrics;
PTT/棉混纺纱及其针织产品性能研究
The elasticity properties of PTT/cotton yarns and its knitting fabrics are tested.
对不同混纺比的低比例PTT/棉纱线及其纬编针织物进行一系列弹性性能测试 ,并指出其与PET/棉织物相比优异的染色性能。
Development of PTT Fiber Cotton Fiber Blended Yarn;
PTT纤维与棉纤维混纺纱的开发
Development situation and tendency of PTT fiber;
PTT纤维的开发状况及发展趋势
Effect of the variety of PTT fiber on its knitted fabric elasticity;
PTT纤维品种对针织物弹性的影响
The Study of Properties of PTT/cotton Blended Yarns and Knitted Fabrics;
PTT/棉混纺纱及其针织产品性能研究
Analysis of the Shape Recovery of Fine Count Light-Weight PTT/Cotton Fabrics
PTT/棉轻薄高密织物形状回复性测试分析
Development of carbonized wool/PTT/combed cotton knitting yarn
炭化毛/PTT/精梳棉针织纱的研制
Research on Pretreatment of PLA/Cotton/PTT Three Components Core-spun Yarn Knitted Fabric
玉米/棉/PTT三组分包芯纱针织物前处理工艺研究
Study of Structure and Performance on PTT and PTT/PET Copolyester;
PTT及PTT/PET共聚酯的结构与性能研究
Research progress in structure of PET and PTT and PET/PTT composite fiber
PET和PTT及PET/PTT复合纤维结构研究进展
Production process of 83 dtex/72 f PTT DTY
83dtex/72f PTT DTY生产工艺探讨
Audiograms of pure tone threshold (PTT) showed various curves including ascending slope, spoon, peak, lain letter S, letter W,gentle slope.
纯音听阈(PTT)检查示上升型,匙型,峰型,倒S型,W型和缓降型PTT图。
Thermal Behavior, Aggregation Structure and Rheological Properties in Poly (Trimethylene Terephthalate) and Poly (Trimethylene Terephthalate)/ Poly (Butylene Terephthalate) Blends;
PTT及其PTT/PBT共混体系的热行为、凝聚态结构与流变性能研究
The Study on the Mechanical Properties and the Dying on PTT/PA6 Blend Fiber;
PTT/PA6共混纤维的性能及染色研究
Researching the End Use Ability of PTT Fancy Yarn Knit Fabric;
PTT花式纱纬编针织物服用性能研究
Research on Relational Mechanical Properties of PA6/SiO_2/PTT Composites;
PA6/SiO_2/PTT复合材料相关力学性能的研究
Study on Development and Properties of PTT/Wool Worsted;
PTT/毛精纺面料的研制与性能研究
Research on Relational Mechanical Properties of PA6/PTT Alloy;
PA6/PTT合金相关力学性能的研究
Study on the Thermal Analysis of Poly (Trimethylene Terephthalate);
聚对苯二甲酸丙二酯（PTT）热性能的研究
The Study on Mechanical Properties of PTT Fiber and Yarn;
PTT纤维及其纱线力学性能的研究
Study on the Preparation of PTT and Its Structure and Properties;
PTT聚酯的制备及其结构与性能研究
Development of PTT Weft Knitted Fabrics and Analysis of Their Performances;
PTT纤维圆纬机产品的开发及性能研究