softening

n.变软；软化

动词soften的现在分词.

The kink might result from over-bending of the softening tube in the oral cavity due to oral temperature and neck flexion. 造成气管内管弯折的可能原因是因为颈部屈曲及口腔温度较气管内管高以致管子变软所导致的过度弯曲。

To plant leeks, the softening planting skill must be adopted. 种植韭黄必须采用软化栽培技术。