999英语网 英语单词
Hairspring的音标发音
Hairspring
英式发音：['hespr] or ['hrspr]
美式发音
(noun.) a fine spiral spring that regulates the movement of the balance wheel in a timepiece.
编辑:基蒂
(noun.) a fine spiral spring that regulates the movement of the balance wheel in a timepiece.
编辑:基蒂