addition n. 1.附加,追加;附加物。 2.【數(shù)學(xué)】加法,加算。 3.【法律】(加在姓名后的)頭銜,官銜;稱號。 4.(建筑物的)附加部分。 have an addition (to one's family) 生孩子,添人口。 in addition 加之,又,另外。 in addition to 加之,除…外又。
Two - addition technique of flying ash and silica fume can meliorate durability of concrete ; air - entraining admixture possesses anti - freezing , descending ice point , and improving workability , and thereof it should be used in concrete . but controlling its dosage is very important to avoid strength loss 發(fā)現(xiàn)粉煤灰和硅灰的雙摻技術(shù)能夠顯著改善混凝土的耐久性能,引氣劑具備防凍抗凍、抗?jié)B及提高負(fù)溫混凝土工作性的優(yōu)點,在負(fù)溫混凝土中應(yīng)該加大使用范圍,但必須控制其摻量,確保強度損失較小。