緩凝作用set: vt. (set; setting) 1.放;擱;貼;靠 ...retard: vt. 弄慢,延緩,延遲,使停滯,推遲;使耽誤,妨礙,阻 ...set retarding admixture: 外加緩劑set-retarding admixture: 外加緩凝劑retarding: 遲滯; 阻滯延遲減速下載手機詞典可隨時隨地查詞查翻譯