这是挠性接头。
Its performance has been tested to the extent that the flexible sub can provide enough resistance to tension, compression and torsion.
并对其进行了性能检测，证明其中的挠性接头具有足够大的抗拉、压、扭能力。
From this enclosed space visitors emerge into a larger, more flexible Treasury Gallery, which is sub-divided into three zones.
从这个封闭空间，游客进入一个更大更灵活的画廊宝库，它分为三个区域。
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