求翻译：a series of experiments was undertaken between 1946-50 to determine the shape of sail shells,since they form a particularly resistant type of vault.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

a series of experiments was undertaken between 1946-50 to determine the shape of sail shells,since they form a particularly resistant type of vault.

问题补充：

匿名	2013-05-23 12:21:38 null

匿名	2013-05-23 12:23:18 一系列的实验是在 1946-50 确定形状的船帆的炮弹 , 因为他们是特别耐受的类型库。

匿名	2013-05-23 12:24:58 a series of experiments was undertaken between 1946-50 to determine the shape of sail shells,since they form a particularly resistant type of vault.

匿名	2013-05-23 12:26:38 1946-50 来确定形状的船帆的贝壳，因为它们形成拱顶特别是抗型之间开展了一系列的实验。

匿名	2013-05-23 12:28:18 正在翻译，请等待...

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