单词	Brinell hardness
释义	Brinell hardness noun Bri·​nell hardness brə-ˈnel-  : the hardness of a metal or alloy measured by hydraulically pressing a hard ball under a standard load into the specimen Word History Etymology Johann A. Brinell †1925 Swedish engineer First Known Use circa 1905, in the meaning defined above Medical Definition Brinell hardness noun Bri·​nell hardness brə-ˌnel-  : the hardness of a metal or alloy measured by hydraulically pressing a hard ball under a standard load into the specimen
随便看	pre-purchased pre-purchasing pre-qualification pre-qualified pre-qualify pre-qualifying pre-race Pre-Raphaelite pre-raphaelitism pre-recession pre-record pre-recorded pre-recording pre-rehearsal pre-release pre-retirement pre-return pre-review pre-reviewed pre-reviewing pre-reviews pre-revisionist pre-revolution pre-revolutionary pre-rinse

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