... Accordion coil 折形线圈 ; 折状线圈 ; 指状线圈 accordion pipe 波纹管 accordion board 手风琴纸板 ...
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V-shaped accordion pipe V型波纹管
accordion pipe products 涵义波纹管成品
accordion n pipe 波纹管
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bellows , corrugated pipe , corrugated tube
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