主 しゅ刻 こく時 じ機構 きこう

shu kokuji kikō

1. Not a main timing mechanism.

1. Was the main engraving mechanism.

1. Mainspring mechanism; Mainspring-related mechanism

1. It is not the main timing mechanism.; It's not a main timing device.

1. It is not the main timing mechanism.; It's not the primary timing unit.

1. Was the main engraving mechanism.

1. It is not a main engraving mechanism.; It is not a primary timing mechanism.

1. Wasn't the main timing mechanism.

1. Probably a main timekeeping mechanism.; Likely a main timekeeping structure.

1. It was not the main timing mechanism.; It wasn't the primary timing device.

1. Wasn't the main engraving mechanism.

1. Probably the main timing mechanism.; Likely the main timing mechanism.

1. It was not the main engraving mechanism.; It wasn't the primary timing mechanism.

1. If/when the main timekeeping mechanism…; If the main timekeeping mechanism were…

1. If it is a main engraving mechanism; If the main engraving mechanism exists

1. If/when the main timing mechanism…; When the main timing mechanism is…