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- The influence of cata-lysts, temperature,time and ratio of raw materials on the conversion was investigated. 实验考察了催化剂种类及用量、反应温度、时间、物料配比等因素对反应转化率的影响。
- The factors affecting the yield of trichloroaniline are reaction temperature, reaction time, and the mole ratio of raw materials. 通过实验考察了反应温度、反应时间、滴加时间及物料比等因素的影响。
- The effects of solvents and its content,reaction time and the mole ratio of raw materials on the yield of p-nitrophenyl isocyanate were studied. 以三光气和对硝基苯胺为原料,合成对硝基苯异氰酸酯,考察了溶剂及用量、反应时间和原料配比对收率的影响。
- Bisphenol-S was synthesized by phenol with sulfuric acid. The effects of ratio of raw materials,sulfonation temperature etc. on the reaction were discussed. 研究了以苯酚和硫酸为原料,在催化剂的存在下合成双酚S,讨论了加料方式、原料配比、反应温度等条件对反应的影响。
- The influence of different ratio of raw materials on crystalline phases and unit cell parameters were studied and the formation mechanism of mullite solid solution was discussed. 探讨不同配方合成的莫来石的晶相组成、晶胞参数及带有结构缺陷的莫来石固溶体的形成机理。
- Effects of purity of raw materials, molar ratio of urea and formaldehyde, reaction temperatures and reaction time on the properties of urea-formaldehyde resin adhesive were studied. 研究了树脂合成过程中原材料纯度、尿素和甲醛的摩尔比、反应温度以及反应时间等对粘度和固含量等性能的影响。
- A new class of polyurethane prepolymer was synthesized from polytet ra methylene ether glycol(PTMG) and toluene diisocyanate(TDI) by investigating the ratio of raw materials and preparation process. 以聚四亚甲基醚二醇(PTMG)和甲苯二异氰酸酯(TDI)为原料,研究了TDI/PTMG的摩尔比和制备工艺条件,制备出了聚氨酯预聚体。
- The factory is in frequent scarcity of raw materials. 这个工厂经常原料不足。
- The effects of the feed ratio of raw materials, reaction temperature and the dosage of catalyst, etc factors on the new synthesis process of brominated epoxy resin for copper clad panel were studied. 研究了原料配比、反应温度、催化剂等因素对覆铜板专用溴化环氧树脂合成新工艺的影响。
- The influencing factors such as ratio of raw materials and reaction temperature on yield were discussed.And a series of experiment showed good repetitiveness and stability of reaction. 讨论了原料的物质的量比和反应温度对反应收率的影响,同时进行了稳定性实验。
- The influence of the kind of catalysts and their dosage, the ratio of raw materials on synthesis of rosin modified nonyl phenol-aldehyde epoxy resin (for short RNPAE) were studied. 考察催化剂种类、催化剂用量、原料配比等因素对合成松香改性壬基酚醛环氧树脂的影响，并在得到的最佳实验条件下，合成出松香改性壬基酚醛环氧树脂(简称RNPAE)。
- The high cost of raw materials is keeping prices up. 原料费用昂贵使得产品价格居高不下。
- The produce is easy to purify, has high quality, high utilization ratio of raw material and energy. 产品质量好,提纯方便,原料利用率高,能量利用率高。
- The price of raw materials has been hoisted by 15%. 原材料的价格上涨了15%25。
- With the production going up, an increasing supply of raw materials is needed. 随着生产量的增长，需要原材料的供应也不断增长。
- This is due to the rising cist of raw materials. 这是由于原材料上涨所致。
- The effect of reaction time, leaching times and solvent PH, ratio of raw material and solvent, PH of phytin, settling time on phytin yield and quality, extracted from tikitiki, were studied. 对米糠中提取菲丁的工艺条件进行了优化，考察了酸浸时间、酸浸次数、酸浸pH值、液料比、中和pH值、静止时间等因素对产品的产量和质量的影响，得出了优化的工艺条件。
- This article studies the main factors, which affect the extract ratio of aluminum oxide from lean alumina ore, such as the ratio of raw material, particle size, broiled temperature, and broiled time. 摘要探讨了原料配比、粒度以及配料烧结温度、时间等工艺因素对贫铝矾土中氧化铝的提取效率的影响。
- Being a liquid containing high organic pollutants,brewery wastewater may not only lead to environmental pollution,but also decreas e the utilization ratio of raw material used in beer production. 含高有机污染物啤酒废水的存在,不仅导致环境污染,而且还会减少啤酒生产原材料的利用率。
- The price of raw materials and produce change every day. 原料和农产品的价格每天都变化。
