pollution (n)

Exposure to noise describes the sound immission/noise pollution to which a person is exposed at the workplace.

Verunreinigung (f)

Durch die implodierenden Kavitationsblasen werden Verunreinigungen entfernt.

杂质 (n)

污染 (n)

污物 (n)

contaminación (n)

ensuciamiento (n)

impureza (n)