送交者: lala 于 February 21, 2003 11:28:58:

回答: 请lala看看，有什么好办法计算 由 小沙 于 February 21, 2003 04:41:30:

First you draw sinX一个周期的curve. You then stick a hemp line on the curve. Straighten the hemp line and use a measure to measure it.

• 谢谢，答案呢，笑 - 小沙 (0 bytes) 17:06:47 2/21/03 (0)

加跟贴