At low speeds, an aircraft has reduced airflow over the wing and vertical stabilizer.

Clogged or dirty cabin air filters can significantly reduce airflow from the cabin vents, as well as introduce allergens into the cabin air stream.

Commonly, screens were placed over openings reducing airflow by approximately 50% so the opening area was increased appropriately.

It can be mild, moderate, or severe, based on the number of times an hour that you stop breathing or have reduced airflow to the lungs during sleep.

This reduces airflow in and out of the lungs.

This reduces airflow through the bronchial tubes, a condition called airway obstruction, making it difficult to move air in and out of the lungs.

In the vicinity of the extraction wells the water table responds to the vacuum by rising, or "upwelling", which can cause the well screen to become submerged thereby reducing airflow.

Reducing airflow from inside to outside can help to reduce convective heat transfer significantly.

The MAF may pose a physical restriction across the vehicle's intake tract, thereby reducing airflow into the engine.

The greenhouse design never made restrictor plates obsolete - the plates that reduce airflow to engines to slow racecars are still used.