The fetal heart rate can be extracted from the returning signal of ultrasound by way of the connection between the modulus of the wavelet transform coefficient and the singular exponent.
本文利用小波变换系数的模的平方值与信号奇异性指数之间的关系，从超声回波信号中提取出了胎儿的心率。
2
This paper analyzes lateral connection method of bridge, confirms widening and reforming method for simple supported beam (slab) bridge via calculating lateral load distribution coefficient.
分析桥梁横向连接方式，通过荷载横向分布系数的计算，确定简支梁板桥改造加宽形式。
3
Adopting the algorithm of conditional probability of random events, the coefficientof conditional connection between failure models may be introduced to show the failure relevance between structures.