voids and pits 中文意思是什麼
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Moreover, the octahedron voids would change to shallow orbicular pits and vanished at last if the etching time was prolonged. our results were contrasted to the result that the fpds are interstitial type defects concluded by takeno et al and support the views that the fpds are vacancy - type defects
本次的實驗結果與takenold等人對fpds的研究結果大大相反，他們認為fpds的端部是一些間隙型的位錯環，而本實驗的實驗結果卻支持了fpd缺陷屬空位型缺陷的觀點。 -
During construction of inclined surface concrete for chamfer, it has always been a tough problem to reduce the occurrence of voids, pits and sand spots, etc. on the surface of concrete
摘要在倒角斜面砼的施工中如何降低砼表面的蜂窩、麻面、砂斑、砂線一直是工程施工的一個難題。 -
Experimental results indicated that the polypropylene fiber can improve the workability of concrete availably, and can increase the presentation quality of structures with the voids and pits decreased ; the cracks of beam are controlled effectively, the width and length of crack decreased, the dispersibility of crack in beam face improved, and the ductility of beam increased ; and the cracking load of reinforced concrete beam is increased, the amplify up to about 30 %, simultaneity the ultimate bear capacity increased
試驗研究表明，使用聚丙烯纖維后，能有效改善新拌混凝土的和易性，並能增強混凝土構件的外觀質量，減少構件表面蜂窩、麻面、氣孔、細小裂紋等；同時，在破壞試驗過程中發現梁的裂縫能得到有效控制，裂縫寬度減小，裂縫的發展高度降低，裂縫的條數增加，提高了梁截面的裂縫分散能力，增強了梁中混凝土的韌性；提高了鋼筋混凝土梁的開裂荷載，幅度可達30左右，增強了結構的延性，提高了結構的抗裂性能和屈服荷載。
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