gate sealing的意思|示意

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gate sealing相关短语

1、 soft sealing gate valve 软密封闸阀

2、 sealing gate valve 密封闸阀

3、 gate valve for ball sealing 球面闸阀

4、 Welding metal rigid mud-sealing gate 焊接式金属硬密封泥浆闸门