A double rainbow frames termite mounds in Australia's grasslands.

双重彩虹笼罩了澳大利亚草原上的白蚁冢。

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Based on tests of two full-scale double-span prestressed frames, internal force redistribution of frame was studied and continuity of structures and axial compression ratio of column were analyzed.

基于两榀接近足尺的后张有粘结预应力混凝土框架的试验，对多跨预应力框架的内力重分布进行了研究，重点考虑了框架的连续性和轴压比的影响。

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The joints are top and seat Angle semi-rigid connections and top and seat Angle with double web Angle semi-rigid connections in steel frames.

这些节点是在钢框架中的顶底角钢半刚性连接和顶底角钢带腹板半刚性连接。

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They end up bent double, on zimmer frames, with pain, particularly pelvic fractures which are almost impossible to control in terms of pain.

BBC: Breakfast with Frost