渐增刚度 rising rate

张增刚 Zeng-Gang Zhang

董增刚 Zeng-Gang Dong

聚丙烯透明增刚母料 Polypropylene transparent and rigid master-batch

增刚剂 Stiffening agent

石增刚 Zeng-Gang Shi

不少支出增长是刚性的 Many increases in expenditure are fixed/mandatory

切线增强刚度法 tangential stiffness method

增强刚性法 stiffening method

增量刚度 incremental stiffness