noun
tunnel kiln
A long industrial kiln where ceramic ware moves continuously through a heated tunnel on cars or a conveyor.
この工場ではトンネル窯を使ってタイルを焼いている。
This factory fires tiles using a tunnel kiln.
A general term for kiln or oven; トンネル窯 is a specific type of continuous kiln.
Compound of トンネル (tunnel) and 窯 (kiln), directly describing the long tunnel-like structure of this type of kiln.