multiple free expansion joint的意思|示意
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多重自由伸缩缝
multiple free expansion joint的网络常见释义
复式自由型膨胀节 ... 波纹管膨胀节expansion*posed*rrugated pipe(s) 复式自由型膨胀节multiple free expansion joint 管道电绝缘pipeline electrical isolation ...
复式自在型胀大节 2.3.136复式自在型胀大节multiple free expansion joint 2.3.137管道电绝缘pipeline electrical isolation ..