×
模态框（Modal）标题
在这里添加一些文本
Close
Close
Submit
Cancel
Confirm
×
模态框（Modal）标题
×
NianQi Search
Quick Search
Advanced Search
Toggle navigation
Home
About Journal
Editorial Board
Instruction
History
Indexed in
Subscription
Contact Us
中文
Research on the oscillation of a hanging chain pendulum --an accurate determination of the acceleration of gravity
于风军
大学物理 . 2009, (
4
): 1 -1 .
