Which term corresponds to the process of bleeding in German?

The term that corresponds to the process of bleeding in German is "Entlüften." In technical contexts such as hydraulics, plumbing, or any system involving fluids, bleeding refers to the act of removing air or gas trapped in a system, which can prevent it from operating efficiently. In German, "Entlüften" specifically describes this action, indicating the release of trapped air or fluids to ensure proper function.

The other options do not relate to the concept of bleeding in this context. "Blow" usually refers to a forceful emission of air or gas, but it does not signify the specific controlled process of removing air from a system. "Brass" is a metal alloy and has no relation to fluid dynamics. "Canopy," typically referring to a covering, especially in a natural or architectural setting, does not pertain to any fluid management or air removal process. Thus, "Entlüften" is the term that accurately represents the process of bleeding in the relevant technical sense.