The pH value of the filtrate was adjusted to 3 with HCl aqueous solution, and at room temperature the crude lignin could be deposited after 30 min. 用盐酸溶液调节滤液的pH值至3,室温下静置30min,使粗木质素沉降下来;
We increased the colloid component of the priming solution, adjusted the pH of the priming solution and kept the ionic concentration constant. 增加预充液胶体成份,调节预充液pH及维持正常离子浓度。
An excess of standard Na-TPB solution is added to seawater samples which bad been adjusted to about pH 12 with NaOH solution and collect the precipitate by microporous filter ( or filter paper). 海水试样用NaOH调节pH约12,加入过量四苯硼化钠标准溶液,用微孔滤膜(或滤纸)过滤沉淀。
Expounding the achievements of Hunan's agricultural regional planning for twenty years: finished an unprecedented investigation of province conditions, adjusted and improved the village estate structure to adapt to the market demand and put forward some solution to construct an agricultural strong province. 论述了湖南省20年来农业资源区划工作所取得的成就:完成了史无前例的省情大调查;适应市场需要,调整优化了农村产业结构;
A determination is reported for the direct titration of sodium sulfate with absorbing alizarin red-S and pH2.6-2.9 adjusted by HAc solution. 本文以茜素红&S为吸附指示剂,醋酸调节pH2.6~2.9,用氯化钡标准溶液直接滴定硫酸钠含量。
Parameters of β-PSO are adjusted dynamically in working out solution and iteration process to improve the speed and quality of the feasible solution, and to ensure particles to search best solutions in the feasible region during particle speed updating. 在产生可行解的过程和迭代过程中动态地调整β随机函数的参数,以提高产生可行解的速度和质量,在粒子速度更新时保证粒子在可行域内不断寻优。
In the third step, the control plan drawn in the former step is adjusted to the actual condition. Optimal model is created with Discrete Programming method, and the optimal solution is obtained with the method of Steepest Descent. 三级控制根据实际情况对二级控制方案进行调整,使用离散规划法建立优化模型,采用最速下降法寻求最优解,力求使总量控制方案不仅在理论上最优,与实际情况也相一致。
The standard solution of first preparation was calibrated twice and adjusted once respectly, then it could reach a required concentration of standard solution. RIA was used to examine the concentration of estradiol and progesterone. 该方法通过对初配的标准溶液进行两次浓度标度和一次调整,就可以达到所要求的标准溶液的浓度。方法简便,快速准确,具有实用性。
Ti ( SO4) 2 is added to the re-extraction solution and the pH value of solution is adjusted with NaOH, then the solution is evenly mixed with ZnS ( Ag) and filtered. 反萃取液滴入Ti(SO4)2溶液,用NaOH调节pH,然后加入ZnS(Ag)混匀过滤。
In the neural network corresponding to multidimensional fuzzy inference, the weights are adjusted by means of solution to fuzzy relation equation. 其中在多重模糊推理神经网络中,通过求解模糊关系方程的方法来确定网络的权值。
The pore structural parameters can be adjusted through varying the freezing temperature and the concentration of silk fibroin solution. 通过改变制备工艺条件可以调节材料内部的孔结构参数。
Network parameters are adjusted indirectly with testing sample set, it make network not only search optimal solution but also does not early get in local minimal value, thereby, improve the generalization of network. 用检验样本集间接地调整网络参数,使网络既能搜索更优解又不过早陷入局部极小值,从而提高网络的泛化能力。
Through the hydrothermal process at 200 ℃ for 6h and using the metatitanic acid as reactant, the nanometer titanium dioxide powder were synthesized under different pH values adjusted by NaOH or HCl solution. 研究了在200℃,6小时水热过程中不同pH条件对合成纳米二氧化钛粉体等电点的影响。
The composition of the composites can also be adjusted by changing the adding amount of Zn2+ in template solution. 复合产物的组成同样可以通过模板溶液中Zn2+的加入量来调节。
The algorithm uses a dynamically adjusted taboo object-wide policy to avoid the algorithm into a local optimal solution, as to improve the quality of the solution. 该算法在传统禁忌搜索算法基础上增加了动态调整禁忌对象范围的策略,避免了算法陷入到局部最优解,提高解的质量。
The feature parameters of solution sets are created by a multidimensional backward cloud model, and then adaptively adjusted based on the change of the elite solution candidates. The result is then used by a forward cloud model to produce the solution set of next generation. 该算法采用多维逆向云模型建立解集的特征参数,并根据是否出现当代精英和跨代精英自适应调整参数,再通过多维正向云模型产生新一代解集。
Adoption of so called Intelligent Hydraulic Power System whose pressure rate output is adjusted based on real time load of hydraulic system provides a radical and effective solution to the problem. 应用能够根据负载进行实时压力自动调节的智能泵源系统是解决这一问题的有效途径。
According to reflection law of light, the depth of the weld pool is adjusted by using the slope as iterative variable. Finally, an engineering solution of the weld pool surface is obtained. 利用光学反射定律,以斜率作为迭代变量不断调整熔池表面深度,最终得到熔池表面形貌的工程解。