Da Inglese a Italiano Legale/Brevetti Meccanica/Ingegneria meccanica unità interna del condizionatore d\'aria

L'espressione compare parecchie volte nel brevetto di un'unità interna del condizionatore d'aria.
Per esempio:
The recessed portion 348 covers the ventilation hole 22 formed in the housing side portion 35a from the side surface side of the indoor unit 300 to form the airflow passage 44.
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The airflow passage 44, which is surrounded by the flow passage walls 42a to 42c and the base portion 40, is formed so as to cover the ventilation hole 22 formed in the housing side portion 35a from the side surface side.
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With such structure, the air intake port 43 and the ventilation hole 22 cannot be seen from the side surface side.
Grazie mille.