说明：  该书籍是循环谱方面的经典书籍，该书籍出自国外著名的循环谱研究专家GARDER，是全英文版的书籍，不过容易看懂，介绍了循环谱的应用领域，相当经典，可以参考，网上找了很久都找不到
(The book is a cyclic spectrum of classic books, the book by renowned expert on foreign cyclic spectrum GARDER, the books are all in English, but is easy to understand, describes the cyclic spectrum of application areas, very classic, you can refer to, to find online for a long time can not be found)