发布时间:2025-01-18 08:54:02
一般是两个零件,一个零件装气管接头,另一个零件做吸盘,中间装O型圈,比如你这个零件。
吸盘很小比如就中间一个孔吸,那做成一个零件也行。
电梯楼共16层应该选15层还是16层希望大家给优点缺点告诉我谢谢
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