Tread groove in Japanese
In Japanese
ステップの溝
suteppu no mizo
Definition
Definition in EnglishA narrow recessed channel in the surface of an escalator step, aligned with the teeth of the plates at its ends.
Definition in Japaneseエスカレーターの足を乗せる面に並んでいる、くし板の歯が通る細いくぼみ。