: Vital for managing compressed air and energy flows where efficiency is measured in minute percentages.
She carried the key like a question. In the market, vendors glanced at it and at the number on her palm but said nothing. A child pointed and laughed as if the sound might coax an answer from the air. At night she dreamed of doors shaped like ellipses and corridors that unfolded like paper cranes; in every dream, the key fit somewhere just out of sight. jufe569 eng better
The Key and the Number