Problem with Translucent materials on some meshes

Hi, when I use a translucent material on a my geometry I have display problems. The mesh is fine. In masked and opaque mode, it displays correctly. But I need translucent material. How can I remove artifacts?

Animated GIF - Find & Share on GIPHY - Masked mode
Animated GIF - Find & Share on GIPHY - Translucent mode with problems