双轨

Traditional form:

雙軌

Pinyin (reading):

shuāngguǐ

Definitions:

• double-track; parallel tracks; dual-track (system)

Characters:

• 双 - pair, couple; both; measure word for things that come in pairs
• 轨 - track, rut, path

Traditional characters:

• 雙 - pair, couple; both; measure word for things that come in pairs
• 軌 - track, rut, path