mellowing

n.

软化，醇化；

v.

（使）成熟( mellow的现在分词 )；使色彩更加柔和，使酒更加醇香；

Tilth mellowing.
Mellowing with age: factors influencing the nonwhite suicide rate.
Mellowing and anisotrophy induced by wetting of moulded soil samples.
Process for preparing means for mellowing beverages
Mellowing with age: older parents are less responsive to a stressor in a long‐lived seabird
Mellowing out: adaptation to commensalism by Escherichia coli asymptomatic bacteriuria strain 83972.
Soil Structure Degradation and Mellowing of Compacted Soils by Saline-Sodic Solutions
Effects of clay type and rate of wetting on the mellowing of compacted soils
Changes of structure and tilth mellowing in a Vertisol due to wet/dry cycles in the liquid and vapour phases
Air entrapment and differential swelling as factors in the mellowing of moulded soil during rapid wetting.