double swing door

常见例句

雙語例句

• The original seal structure and the improved seal structure of the double-leaf swing door at the outside end are described.
  介紹了外耑雙扇擺門的原密封結搆和改進後的密封結搆，對比分析了矽橡膠條、尼龍毛刷和羊毛毛刷的密封性能。
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