上面には開口が形成されている

積層体の上面には開口が形成されている。

ChatGPT:

ChatGPT

An opening is formed on the upper surface of the laminate.

あなた:

How about "formed in"?

ChatGPT:

ChatGPT

"An opening is formed in the upper surface of the laminate" is also correct and can sometimes sound more natural, depending on the context.

Comparison:

• "Formed on":

  • Implies the opening is more superficial or on the outermost layer of the surface.
  • Suitable if the opening does not penetrate deeply or if the focus is on the surface where it appears.

• "Formed in":

  • Suggests the opening penetrates into or through the surface, implying a deeper or more integrated formation.
  • More precise when describing openings that are cut into or go through the material.

Recommendation:

If the opening is a hole, slot, or similar feature that penetrates into the laminate, "formed in" is the better choice. If the opening is a feature primarily visible or present on the surface, "formed on" works fine.