無水檸檬酸 的英文怎麼說
中文拼音 [wúshuǐníngméngsuān]
無水檸檬酸
英文
anhydrous citric acid-
Main products : an water citric acid, anhydrous citric acid
主要產品：一水檸檬酸無水檸檬酸Photography chemicals - citric acid, anhydrous and citric acid, monohydrate
攝影用化學藥品.無水檸檬酸和一水檸檬酸Citric acid an mo
一水無水檸檬酸Main products : citric acid, anhydrous citric acid, sodium citric acid
主要產品：檸檬酸無水檸檬酸檸檬酸鈉The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper. the experimental results indicate that the effect of single retarder, such as citric acid, is inferior to that of composite retarder which was made of blending citric acid with a few portland cement ( about 0. 5 ?, by weight ). the effect of different water - retention agents, such as polyvinyl alcohol ( pva ), carboxymethyl cellulose ( cmc ), and na - bentonite, etc., was also studied, and the results demonstrate that by means of adding organic and inorganic water - retention agent simultaneously the water - retention of plastering slurry can obviously be improved. the optimal mix proportion of gypsum plaster suitable to finish coat of walls and ceilings of buildings has been got by use of factorial experiment with orthogonal array accounting for interactions between factors each other
研究了分別以檸檬酸、檸檬酸與普通硅酸鹽水泥復合物作緩凝劑，調節粉刷石膏的凝結時間，並對比2種緩凝體系對石膏抗折、抗壓強度的影響.比較不同保水劑（聚乙烯醇、羧甲基纖維素）以及相同量的保水劑在不同工藝流程下保水效果上的區別.探索了有機保水劑和無機保水劑對粉刷石膏的保水性的影響.結果表明，檸檬酸與普通硅酸鹽水泥的復合緩凝劑比單純的檸檬酸更能有效地延緩建築石膏的凝結，同時建築石膏的抗折、抗壓強度降低幅度減小分享友人