間隔が

the interval is

→ 間隔
phrase Rare #45,247
the interval is 間隔 means a gap, interval, or spacing; が marks it as the subject. The phrase is usually followed by a description of the interval or spacing.
JA: 席と席の間隔が狭いです。
EN: The space between the seats is narrow.

間隔が短い少し離してこう?

The gap is too small. Spread them out a little—like this?

— タイタニック (1997)

しかもねこの車輪の間隔が短いでしょ

And what's more, the wheels are close together, right?

— High and Low (1963)