查询词典 concentration

Surveillance: evaluation by a nephrologist every 3-6 months depending upon the severity of renal impairment; ophthalmologic evaluation every 1-2 years; assessment of bone mineralization throughout the disease course; every 2-3 years fasting blood glucose concentration and testosterone concentration (in males starting before puberty); routine monitoring for late-onset complications in poorly treated adults.

监控：每3－6个月（视肾脏损坏严重程度而定）由肾科医生评估；每1－2年由眼科医生评估；在整个病情发展过程中评估骨矿化程度；每2－3年禁食一次降低血葡萄糖浓度和睾酮浓度；在治疗不当的成人中进行迟发性并发症的日常监控。

The results showed that the optimum enzymatic conditions were: choosing papain, with substrate concentration 16%, enzyme concentration 4000U/g, hydrolysis time 6h, and the optimum conditions for the enzymatic hydrolysate of porcine blood to synthesize nitrosyl heme-polypeptide were: NaNO2 added 1.6%, pH5.00 and reaction time to 12min at 55℃.

试验表明，以选用木瓜蛋白酶效果较好，最佳酶解条件为：底物浓度16%，加酶量4000U/g，水解时间6h；酶解液合成色素最佳参数为：pH5.00，反应时间12min ，反应温度为55℃，NaNO2 的添加量为1.6%。

The quantity of nitrous acid is proportional to the power of light and concentration of uranyl nitrate and decreases with the increase of concentration of nitric acid at higher acidity.

亚硝酸的生成量与光照功率和U的浓度成正比，当酸度大于0.1mol/l时，其量随酸度增加而减少。

Organic substances (diethylene glycol, glycol methyl ether and methyl ethyl ketone) were used as nonsolvent additives and N-methyl-2-pyrrolidone used as a solvent in membrane preparation. The effects of PPESK concentration, the type of additives and the NSA concentration in casting solution on the morphology and performance of the PPESK hollow fiber ultrafiltration membrane were systematically investigated.

以PPESK为膜材料，NMP为溶剂，水为凝胶剂，选用乙二醇甲醚、一缩二乙二醇和丁酮为非溶剂添加剂，系统研究了聚合物浓度、添加剂种类和含量对PPESK中空纤维超滤膜结构和性能的影响，制备了一系列具有不同孔径和通量的中空纤维超滤膜。

The optimal operating conditions were as follows: concentration of polyaluminum chloride was between 50 and 60 mg/L as Al, the concentration of sodium oleate was between 5 and 10 mg/L, the pH values of the wastewater was between 4 and 5, the hydrolic retention time was 1 hour and the recycle ratio was between 10 and 20%.

此外，在考量成本与水质下，以多元氯化铝浓度 50 ~ 60 mg/L as Al，pH 调整至 4 ~ 5，捕集剂浓度为 5 ~ 10 mg/L，水力停留时间为 1 小时，回流比为 10 ~ 20%为最适之操作条件范围。

Opuntia can provoke fibroblast proliferation within a certain concentration range, which exhibits a significant concentration-effect relationship.

在一定浓度范围内，仙人掌具有促进体外培养成纤维细胞增殖的作用，并表现为明显的量－效关系。

The influence of H2O2 concentration,initial concentration and pH of methyl orang on degradation efficiency was investigated,and the degradation kinetics was discussed.

在实验过程中，纳米TiO2协同Fenton试剂光催化降解初始浓度30mg/L、pH=3.0的甲基橙120min，其降解率达到99.4%，分别是同等实验条件下单独纳米TiO2降解率的2.63倍，单独Fenton试剂降解率的2.32倍，是两者算术和的1.2倍。

Because of the effect of orientation orders on the distribution of the reactive group, which was called the " pseudo-concentration effect ",the concentration of the reactive group in the ordered domain was higher than that in the isotropic domain.

当体系中出现了介晶基元的有序排列时，与之相连的反应基团的分布也受到影响，有序区内的局部浓度将变大，产生假浓度效应，并最终影响扩散控制反应动力学。

A liner relationship between the concentration of L- ornithine and the optical density in the range of 0 to 0.20μmol/mL was obtained, and the least detectable concentration of L

该反应体系稳定，受其他氨基酸的影响程度很小，或者在发酵液等的实际测定体系中存在量极少而可以忽略不计，线性范围为0～0.20μmol/mL，检测精度为0.01μmol/mL。

By using a fracture simulation unit,the regularity that temperature,flow rate and fracture width influence on HCl/dolomite reaction rate is investigated.The sequence of temperature,flow rate,acid concentration and fracture width influence to the acidic rock reaction rate is also studied in a four factors and four levels orthonormal test,and the sequence that acid concentration＞flow rate＞temperature＞fracture width is found.At the last,the possible HCl/dolomite reaction mechanism model which can explain the influence factors is derived.

文中利用人工模拟裂缝装置，研究了温度、注酸排量、裂缝宽度等因素对盐酸/白云岩反应速率的影响规律；并采用四因素四水平的正交试验，综合考察了温度、排量、酸浓度、缝宽四种因素对酸岩反应速率的影响的主次顺序，发现对酸岩反应速率影响力的大小次序为：酸浓度＞排量＞温度＞缝宽；最后，提出了盐酸/白云岩反应可能的机理模式，并根据这一模式对诸因素的影响进行了合理的解释。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。