1)post-disaster relief,灾后救济 PDR2)PDR method,PDR法3)post-disaster relief,灾后救济4)Pressure drop ratio PDR,压降比PDR5)PDR Model,PDR模型6)PDR nano-anti-wear protective agent,PDR-纳米抗磨剂
用法例句
The coating process、friction and wear properties、component and engineering application of PDR nano-anti-wear protective agent(abbreviated as PDR)and DJB-823 protective agent(823)were investigated systematically in this paper.
