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[物]二次谐波
1、second cousin───n.第二代堂兄妹，第二代表兄妹；远房堂或表兄弟姊妹
2、second that───第二个
3、spherical harmonics───球函数；立体[调和]函数
4、second───adj.第二（个）的；（比赛、级别上）居第二位的；另外的；次要的；v.支持，附议；临时调派（工作人员等）；n.(Second)（美）塞孔（人名）；num.第二；（规模、质量等）居第二位的；另外的；n.秒；瞬间；第二名；二等品；adv.居第二位；第二，其次
5、harmonics───n.和声学；泛音；数律分析法
6、lam second───林秒
7、second words───第二个词
8、second alarm───第二次报警
9、bravely second───勇气默示录
1、Approximate analytic expressions of the second, fourth, and sixth harmonics on the strength are presented in concise forms.───了二、四、六次谐波幅度与吸收强度的关系的近似解析表达式。
2、This second article refers to the inheriting section of the first one, it firstly introduces six kinds of active measures to reduce harmonics pollution;───本文“二谈”系“一谈”的继篇，首先介绍了减小谐波污染的六类主动措施；
3、key point of structure design and accuracy analysis in precision mount which is needed in the procession to obtain second and third harmonics generation is introduced.───介绍了实现倍频和混频过程所需的精密调整架的结构设计要点及其精度分析。
4、SNR enhancement for the second harmonics in tissue imaging by the use of the pulse inversion technique───生物组织成像中用反相位脉冲技术提高二次谐波信噪比的研究
5、Design Method of Current Measurement Sensor Based on Second Harmonics Detecting───一种基于二次谐波的电流传感器研究