Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。
How the ear distinguishes vowels
耳朵如何区分元音
Vowels vs time and frequency
元音与时间和频率
Phonemes of the English language
英语的音素
Index

Musical instruments
索引 音乐乐器
 
HyperPhysics***** Sound
HyperPhysics ***** 声音
R Nave
Go Back
返回