径けいの大おおきい

expression

of large diameter; large-diameter

Descriptive phrase used as a modifier, typically before a noun, to indicate something has a large diameter.

• 径けいの大おおきいパイプが必ひつ要ようです。

  We need a pipe of large diameter.

• この木きは径けいの大おおきい幹みきを持もっている。

  This tree has a trunk of large diameter.