1)bessel function of the third kind,第三类贝塞耳函数2)bessel function of the second kind,第二类贝塞耳函数3)modified Bessel function of the third kind,变形第三类贝塞尔函数4)Hankel function;Bessel function of the third kind,第三类贝塞尔函数;汉克尔函数5)Bessel function,贝塞耳函数6)Bessel function;Bessel function of the first kind,第一类贝塞尔函数;贝塞尔函数