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Results: When the proportion of acetic acid and hydrogen peroxide was 2:1,the catalyst sulfuric acid used was in the range of 30~50 g/L,the reaction temperature was 25℃ and the reaction time was 24 h,the product had highest peracetic acid content.

结果,乙酸与过氧化氢质量比为2:1时,催化剂硫酸用量在30g/L~50g/L范围内,反应温度25℃和反应时间24 h综合条件下,产出过氧乙酸含量最高。

7 Ion source: external PICI/PICI ,with exchangeable ion volumes "

采用惰性材质、可更换设计,最高使用温度300℃。

Polyvinylidene Fluoride PVDF homopolymer conforming to ASTM D-3222, Type I, Grade 2, is a tough, abrasion-resistant fluorocarbon material that has a design stress of 1,360 psi at 73°F and a maximum service temperature of 280°F.

聚偏二氟乙烯PVDF均聚物,符合ASTM D-3222,类别1,等级2标准,是一种坚固的、耐磨的碳氟化合物材料,在22oC下,其设计应力为1,360 psi,最高工作温度达到137oC。

In organic acid the content of quinic acid is most high, the content drops as roasting temperature is rising, and formic acid and fumaric acid content are low.

有机酸中以quinic acid含量最高,含量随著烘焙温度的上升而下降,而formic acid以及fumaric acid含量则偏低。

The most important parameters involved in the design of the hot gas wall on a regeneratively cooled chamber are the thermal conductivity of the material, the strength of the material at elevated temperatures, the material maximum operating temperature and the coolant passage dimensions.

最重要的参数,参与设计的热气体墙就一再生冷却商会是热导率材料,材料的强度在高温下,材料的最高操作温度和冷却剂通过层面。

Resuit Temperature had the most effect on the extraction of flavone.

结果结果表明,温度对黄酮提取影响最大,固液比1:60,在90℃下,每次1h,重复提取3次,黄酮提取率最高。

The effects of many parameters, such as the amount of surfactant, airflow rates, pH, NaCl, ethanol and temperature on the solvent sublation were studied. Experimental results showed that a ratio of surfactant to Pb-dithizone complex (2∶1) was the most effective for the removal, with over 97.4% Pb removed from the aqueous solution in 40 min by solvent sublation, at the value of pH 12.6.The solvent sublation process followed first order kinetics. A characteristic parameter, apparent activation energy of attachment of the sublate to bubbles, was estimated at a value of 2.08 kJ/mol.

结果表明,当表面活性剂与硝酸铅物质的量之比为2∶1时,铅去除率达97.4%;体系去除率在pH值为12.6时最高;有机溶剂的影响不明显;少量的乙醇可提高其去除率和去除速率,但过多会产生抑制作用;适量的NaCl能提高体系去除率,但随着浓度的提高呈现下降趋势;去除速率随气流速率增加而增加,体系去除率随温度升高而递增;反应过程遵从一级动力学,表观活化能为2.08 kJ/mol。

High adhesive force, free of critical substances, tearable by hand, flexible and supple, suitable for machine and manual processing Hx510 is especially suitable for the taping of cable harness.

具有高粘度、无危险物质、可手撕、良好的柔韧性、适合机用和手工使用,最高耐温度是105℃。具有尤其适用与汽车工业的线束包缠。

Under the optimum conditions (i.e., reaction at 40℃ using hyperthermophilice esterase APE1547, 4-Cl-benzaldehyde substrate, and trichloromethane solvent), this reaction provided optically active secondary alcohol with an enantiomeric excess up to 56% and a yield up to 78%.

在最适条件(嗜热酯酶APE1547为酶源,反应温度40℃,氯仿为溶剂,4-Cl-苯甲醛为底物)下,加成反应生成的光学活性醇产率最高达78%,ee值最高可达56%。

The cyclization conditions were optimized with respect to reaction system, time, temperature, catalyst nature and its content, and ZnCl2 is found to be more suitable than other catalysts investigated for the trimerization of aromatic nitriles under normal pressure, and the maximum conversations of terephthalonitrile and 4,4'-dicyanobiphenyl were 82% and 78%, respectively.

优化了反应体系、温度、时间、催化剂种类和含量等工艺条件,结果表明,对于氰基在常压下的环化反应,ZnCl2是较为合适的催化剂,TPH和DCB聚合转化率最高分别可达82%和78%。

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推荐网络例句

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。