strength grade of concrete中文,strength grade of concrete的意思,strength grade of concrete翻译及用法

2026-10-18 17:03 浏览次数 32

strength grade of concrete

英[streŋθ ɡreid ɔv ˈkɔnkri:t]美[strɛŋkθ ɡred ʌv kɑnˈkrit]

混凝土强度等级

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