傅立叶[谐波]级数展开

SSS 2010-05-20

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Why do some chords sound sweet but others make you wince? Well it appears our earsor at least the ears of 250 Minnesota undergradsprefer chords containing harm

发表于:2018-12-24 / 阅读(71) / 评论(0)

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北师大初中英语七年级下--Expansion 12-1

[00:00.00]UNIT 12 Expansion 12 [00:07.10]2 Hi,James, [00:09.92]Thanks for you letter. [00:11.35]You asked about my home. [00:13.58]I live with my parents in an apartment [00:14.97]in a district in the east of Beijing. [00:19.02]I live quite near Beij

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北师大版初中英语七年级下

北师大初中英语七年级下--Expansion 11-1

[00:00.00]UNIT 11 Expansion 11 [00:09.20]1 One day in England Diego [00:12.71]and Fernanda were very hungry. [00:15.40]They didn't have any food [00:17.34]and they didn't have any money. [00:19.65]So they thought out a clever plan [00:21.78]to get a

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北师大版初中英语七年级下

优美音乐来自和谐的数学组合(有声)

Students who listened to different chords rated as more pleasing the ones that westerners think of as harmonious, the individual notes of which have definite mathematical relationships 【英文文本】 Why do some chords sound sweet but others make

发表于:2019-01-02 / 阅读(53) / 评论(0)

60秒科学

VOA标准英语2010年-Catherine Russell Releases Blues Influ

Vocalist Catherine Russell is always searching for that next great melody. She's found more than a dozen of them to sing on her latest album, Inside This Heart Of Mine. Catherine Russell is a perfectionist when it comes to choosing her material. Her

发表于:2019-02-06 / 阅读(54) / 评论(0)

VOA标准英语2010年(六)月

学个词Learn a Word 第1696-expansion

今天我们要学的词是expansion。Expansion 扩展，扩充。The Kennedy Arts Center unveiled a $100 million expansion plan. 肯尼迪艺术中心宣布扩展计划，耗资一亿美元。President Obama supported the expansion of H1B visas fro

发表于:2019-02-18 / 阅读(50) / 评论(0)

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