composite expansion and contraction installation
3.1伸缩缝Expansion and contraction joint 3.2伸缩装置Composite expansion and contraction installation 3.3伸缩jt Expansion and contraction quantity ..
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composite expansion and contraction installation
复合伸缩安装
以上为机器翻译结果，长、整句建议使用 人工翻译 。