machine belt
Rare term for a belt used in machinery, similar to ベルト. The cross-reference to ベルト sense 2 suggests it is a less common synonym.
See also: ベルト
The belt on the old machine broke.
Compound of 調べ (しらべ, 'investigation; tuning') and 帯 (おび, 'belt; sash'). The exact derivation is uncertain; it may refer to a belt used in tuning or adjusting machinery.