伊洛瓦底三角洲地区在遭受纳尔·吉斯强热带风暴两个多星期后，东盟成员国才说服缅甸来会面讨论为灾民们提供援助的问题。
It took more than two weeks after Cyclone Nargis devastated the Irrawaddy Delta before ASEAN members could persuade Burma to meet to discuss aid for the storm's victims.
通过有限单元法计算和优化设计，确定锯片齿形前角、后角、楔角及槽底圆弧半径合理值的原则及其参考值。
Principles of reasonable values and reference data of saw tooth's rake, relief, wedge angles and radius of bottom arc can be determined through finite element method of calculation and optimum design.
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