William's core,atmospheric core

基本解释威兼氏砂心,增压砂心

网络释义

1)William's core,atmospheric core,威兼氏砂心,增压砂心2)atmospheric core,William's core,增压砂心,威廉氏砂心3)penetration core,增压砂心4)insert core,增压砂心,嵌入砂心5)crush of core,砂心压坏6)bedding a core,砂心垫砂

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