他的喷气流不需要螺旋桨，而是由一个两端开口的管子来实现。
His jet needed no propellers. It was a tube, open at both ends.
这一修正结果证明了两端开口的韧性爆裂抗内压强度公式是可靠的。
This modification of the formula shows that the formula of ductile burst internal pressure strength with Capped-Open condition is valid.
每个公寓以两端巨大的开口为特色，可以看到花园美景，并通向户外平台。
Each of the apartments features large openings at either end that provide views to the garden, and lead to outdoor patios.
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