外がい形けい

noun

external form; outer shape; externals

Refers to the outward physical shape or appearance of something, often contrasted with inner content or structure.

• この機き械かいの外がい形けいはシンプルだが、内ない部ぶは複ふく雑ざつだ。

  The external form of this machine is simple, but the inside is complex.

• 外がい形けいだけでは品ひん質しつは判はん断だんできない。

  You can't judge the quality from the outer shape alone.