By means of higher transcendental functions ( exponential integral, sine and cosine integral ), the general solutions ofthe problem are obtained. 通过引入高等超越函数(指数积分,正弦和余弦积分等),得到了问题的一般解。
Hilbert transform of Sine and Cosin integral functions 正弦积分(SI)函数与余弦积分函数的Hilbert变换
The principle of weak capacitance sensing is based on the charge integral amplifier and Lock-In amplifier. The practical circuit is composed of sine carrier wave generation, charge integral amplifier, AC amplifier, analog multiplier demodulator, and low pass filter. 微电容检测使用电荷积分和锁定放大器原理,具体电路包括载波发生电路、电荷积分放大器、交流放大、模拟乘法器解调电路以及低通滤波。
The paper details the calculation method of single sine phonological model ( SSPM ) in insect phenology, in which the daily temperature is curved by sine function. Accumulations and daily degree-days are acquired by integral equation methods. 阐述了昆虫物候分析的SSPM模型(singlesinephonologicalmodel)计算方程和过程,该模型采用Sine函数拟合每天温度变化,并利用积分,获取每天有效积温和一定时间内日度累积值。
The dynamical model about KONI vertical absorber with sine motivation is built. Newmark - β as an integral means is used to simulate the absorber ′ s dynamic characteristics such as the acceleration response and the displacement response of the damper. 以KONI垂向油压减振器为例,建立了高速列车油压减振器正弦激励下的动力学模型,并运用纽马克-β法对模型的位移、加速度等动力学过程进行了数值仿真。