high and low frequency technique
high and low frequency technique
高、低频技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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With the development of architectural technique and its construction, a number of roof structures with new types, large spans, low-rise, low-frequency and high flexibility have been emerged.
随着建筑科技和施工工艺的逐渐进步，大量形式新颖的大型体育设施、会议展览馆等大跨度柔性结构不断涌现。
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