Việt
sự hao mòn
sự mòn thường xuyên
sự hao mòn vật lý
sự mài mòn tự nhiên
Anh
wearing
permanent wear
wearout
physical wear
wear and tear
natural wear
wear-and-tear
wearing /toán & tin/
permanent wear, wearing, wearout
physical wear, wear and tear, wearing
natural wear, wear-and-tear, wearing