一次群速度 いちじぐんそくどインターフェース

ichiji gun sokudointāfēsu

1. Not a single-group velocity interface.

1. Was once a group velocity interface.

1. Once-through velocity interface; Single-pass velocity interface

1. It is not a one-time group velocity interface.

1. It's not a single-mode group velocity interface.

1. It was a group delay interface.; It was a group velocity interface.

1. Once group velocity interface.

1. Is not a single-group velocity interface.; Is not a single-velocity group interface.

1. Wasn't a one-time group velocity interface.

1. Probably a group velocity interface.

1. Was not a once-group velocity interface.; Was not a one-time group velocity interface.

1. It wasn't a group velocity interface.

1. Probably a single-group velocity interface.

1. It was not a group velocity interface.

1. If it were a single-mode group velocity interface.; If it’s a single-mode group velocity interface.

1. If it is a once-per-group velocity interface.; If it were a once-per-group velocity interface.

1. If/when a group velocity interface…; If there is a group velocity interface…