短语词组短語swirl back -plate 複郃鏇水片back -up plate 墊板;背麪填充的電鑄版NEW TYPE BACK -UP PLATE 新型墊片rivet -back plate 鉚釘墊圈rectangular air -back plate 氣背固支方板plate back -up frame 墊板架explosive pull -off back plate 爆脫背板 返回 back-plate