The incident caused Tupolev to recommend that the tank have a convex base, which was adopted.
2.
The lavabo has a convex base and faucett, and is decorated with florians and surmounted by pinnacles.
3.
It had a convex base, which carried a heat shield ( Item "'2 "'in the diagram below ) consisting of an aluminum Mission profile for details .)
4.
(Original description ) Shell . Fusiform, biconical, very slightly and bluntly angulated, with a scarcely convex base, elongated into a largish, slightly reverted, rather equal-sided snout.
5.
(Original description by W . H . Dall ) The small, thin shell is pearly white with faint touches of pale brown, The whorls with a globular inverted minute nucleus and a rather convex base.
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