気 き中 ちゅう濃度 のうど

kichūno udo

1. Not air concentration. ; Not airborne concentration.

1. Airborne concentration was.

1. Airborne concentration; Concentration in air

1. Airborne concentration of

1. Not airborne.; Not present in the air.

1. It's not an airborne concentration.

1. Airborne concentration was.

1. Air concentration.

1. Not airborne.; Not present in the air.

1. Wasn't airborne concentration.; Wasn't the atmospheric concentration.

1. Likely airborne.; Probably an airborne concentration.

1. It was not an airborne concentration.

1. It wasn't the airborne concentration.

1. Likely airborne concentration; Probably in the air

1. Was not airborne concentration.; Was not an air concentration.

1. If/when airborne concentration; If the airborne concentration were

1. If/when airborne concentration; If the airborne concentration is

1. If/when airborne concentration; If the airborne concentration