材料老化 meaning in Chinese

material aging

Test program for the ageing properties of piezoelectric ceramics
压电陶瓷材料老化性能试验规程
Synthetic materials aging and application
合成材料老化与应用
Test methods for resistance to weathering of building waterproofing materials
建筑防水材料老化试验方法
Test methods for resistance to weathering of building water proofing materials
建筑防水材料老化试验方法
Synthetic materials ag
合成材料老化与应用

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