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trass n.【地質學;地理學】火山土;粗面凝灰巖。

trattoria

The research is to develop a new material - - - - high performance concrete of hill sand on the basis of practice of high strength concrete of hill sand and knowledge of ultra - fine trass additive by using concrete material in guizhou and mixing fly ash . the research result shows that the flowability , moldability , cohesiveness of high performance concrete of hill sand are significant by comparison with ordinary concrete on mechanical properties , long term properties , and durability 本研究課題是在已成功研制并實際應用的c60高強山砂混凝土的基礎上,結合對微細(超細)活性摻合料性質的理論認識,充分利用貴州當地的混凝土材料,并摻入微細(超細)活性摻合料,研制一種新型的高性能混凝土,即山砂高性能混凝土。

The health education for patients with artery man - made blood vessel bypass trass plantation 動脈人造血管旁路移植術的健康教育