the lowest tone of a harmonic series同义词:fundamental frequency, first harmonic
形容词 fundamental:
serving as an essential component同义词:cardinal, central, key, primal
being or involving basic facts or principles同义词:rudimentary, underlying
far-reaching and thoroughgoing in effect especially on the nature of something同义词:profound
例句
There are fundamental differences between your religious beliefs and mine.你我的宗教信仰根本不同。
If you two are going to marry, I advise that you need to know the fundamentals of cooking.如果你们要结婚的话,我建议你们了解烹调的基本知识。
A knowledge of economics is fundamental to any understanding of this problem.经济知识对于理解这个问题是至关重要的。
There is a fundamental difference in attitude between these two politicians.这两位政治家的态度有着根本的区别。
详细解释
fun.da.men.tal adj.(形容词) Of or relating to the foundation or base; elementary:基础的:基础或基本的或与此有关的;根本的:例句:the fundamental laws of the universe.宇宙间的基本规律 Forming or serving as an essential component of a system or structure; central:主要的:形成或作为系统或结构的重要组成部分的:例句:an example that was fundamental to the argument.论据中的一个主要例证 Of great significance or entailing major change:十分重要的:极其重要的或主宰重大变化的:例句:a book that underwent fundamental revision.经过重大修订的一本书 Physics【物理学】 Of or relating to the component of lowest frequency of a periodic wave or quantity.基波的:周期波或周期量的最低频率的分力的或与此有关的Of or relating to the lowest possible frequency of a vibrating element or system.震动因素或体系的最低频率Music Having the root in the bass:【音乐】 基音的:例句:a fundamental chord.基音和弦 n.(名词)Something that is an essential or necessary part of a system or object.基础:系统或事物极其重要或必不可缺的部分Physics The lowest frequency of a periodically varying quantity or of a vibrating system.【物理学】 基频:周期变化量或振动系统的最低频率 【引伸】 fun.damen.tally adv.(副词)