查询词典 formaldehyde solution
- 与 formaldehyde solution 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The alkali solution concentration and steam explosion process condition were optimized by testing the solubility of soft cellulose after steam explosion before and after treatment towards aq.NaOH with various concentration. It was concluded that the soft cellulose can dissolve in the 9% aq.NaOH solution completely under the condition of explosion pressure 3.0Mpa and explosion time 60s. At the same time, the influence of sweller-thiourea on the new aq. alkali soluble cellulose/NaOH solution was studied in this paper. The dissolving phenomena and the steam explosion mechanism of soft cellulose were discussed.
本文通过对闪爆前后软木纤维素在不同浓度的稀碱溶液中溶解度的测试分析,优化了碱溶液浓度和最佳闪爆工艺条件,得出在闪爆压力超过3.0MPa,保压时间为60s的条件下,软木纤维素可完全溶解于9%的NaOH稀碱溶液中,并且对助溶剂-硫脲对碱可溶纤维素/NaOH水溶液的增溶效果进行了研究和探索,同时也对溶解机理和闪爆机理进行了分析讨论。
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This novel method for growing a barium titanate characterizes by mixing a barium nitrate solution and hexafluorotitanic acid solution to produce a barium titanate solution.
S98ZKA0174 作为罩幕材料之二氧化钛膜及其移除方法获证 TW 发明 88105243 160419 2019/3/31 670,000 Nuvoton 让与本案提出一种作为罩幕材料之二氧化鈇膜及其移除方法。
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The invention provides a method for preparing a tube-shaped cathode of a direct methanol fuel cell, belonging to the fuel cell field and comprising the steps of: dispensing a single solution for gel injection molding at first, then adding a mesophase bituminous coal micro ball into the single solution and stirring evenly to obtain stable slurry, then casting the slurry into a die, preserving heat until the single solution reacts with a cross-linker completely to obtain a carbon-biscuit, after drying and sintering the biscuit in vacuum, preparing a diffusion layer and a catalyst layer on the surface by dipping process, and then coating polyester electrolyte membrane with a burette, rolling the carbon on a warm table to solidify the electrolyte membrane.
一种制备直接醇燃料电池管状阴极的方法,属于燃料电池领域。本发明首先配制凝胶注模用单体溶液,之后将中间相沥青炭微球加入到单体溶液中,搅拌均匀得到稳定的浆料,然后将浆料浇注到模具中,保温至单体与交联剂完全反应,得到炭管素坯,将素坯烘干、真空烧结后,在其表面采用浸渍工艺制备扩散层、催化剂层,然后采用滴管涂覆聚合物电解质膜,在加热台上对炭管进行滚压,使电解质膜固化。
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The solution is mainly characterized by changing the pH value of the solution between 2 to 6 by adding nitrogen compound into an acid dipping solution.
这种溶液的主要特征是通过在酸性浸渍溶液添加含氮化合物,使其pH值在2~6之间变化。
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The results showed that two of the ball cactuses tested could growth well in solution culture , in which the growth rate was significantly higher than or equal to that in peatmoss culture. Among the four solution culture formulae , formula 4 had the highest biomass increment and uptake of N , P and Kfor Ferocactu horridus. The biomass of Echinopsis calochlora did not differ significantly among the four formulae , but significantly increased higher than medium culture. This study indicated that ball cactuses could grow well in nutrient solution culture.
结果表明:经100 d 种植,供试的仙人球在这4 种营养液配方静置水培中均能正常生长,而且生长速度显著大于基质栽培或与之相当;在4 种营养液配方中,巨鹫玉在完全硝态氮的配方处理中球体质量的增加比基质栽培的快1 倍以上, N、P、K的吸收量也显著高于其它含有铵态氮配方的;而金盛球在所有营养液配方中生长量均显著高于基质栽培,球体质量增长量超过基质栽培的1 倍以上, 4 种配方间无显著差异。
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Results In three Hank's solution infused cochleas, the thresholds of IC potential were kept in the normal level and no hair cell loss was found 14 days after the beginning of the infusion, suggested that the pump implantation and Hank's solution infusion had no significant effects on the cochlear functions. In contrast, threshold shifts of IC potentials and hair cell loss were found in two BSO infused animals, suggested that the infused solution had distributed into the whole cochlea.
结果 应用渗透压泵耳蜗灌流Hank液后,下丘电位阈值维持正常,耳蜗毛细胞无损伤;灌流BSO液14天后,所测频率(1、 2、 4和8 kHz)的下丘电位阈值平均升高28 dB,内耳毛细胞平均缺失39.3%,缺失分布于耳蜗各回,表明渗透压泵工作良好。
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Purified sucralose-6-acetate which had been recrystallized was hydrolyzed in th system of sodium methoxide/methanol solution, and the mixture was quenched with H+ ion exchange resin, and cake was washed with methanol. The eluate was concentrated to remove methanol and methyl acetate. The aqueous solution was decoloured with active carbon. The filtrate solution was concentrated and crystallized above 38℃for sever hours, the product sucralose was collected.
重结晶的三氯蔗糖-6-乙酸酯于CH3ONa/CH3OH体系中醇解,用H+型阳离子交换树脂中和,蒸去甲醇、乙酸甲酯等,在水相中用活性炭脱色,水溶液经浓缩,在38℃以上结晶数小时,分离得三氯蔗糖。
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Compared with the exchange and mutation operation in genetic algorithm ,crossover operation becomes helpless when adaptive value of most individules in demes have little difference.The algorithm falls into local solution and can't be solved by exchange. Although mutation can make it shake off local convergence and jump out of local solution, denteric mutation may destroy the produced module that is constructive to form the optimal solution.
相比遗传算法中的交换和变异操作,当种群的多数个体适应值相差不大时交叉操作就显得无能为力,算法陷入局部解而不能由交换解决,突然变异能够使之摆脱局部收敛而跃出局部解,但是后期的变异可能破坏已产生的对形成最优解有建设性作用的模块。
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By comparison of eight micro adsorption, A resin with high adsorption rate and eluent rate was used to adsorb chlorogenic acid from extraction solution. The adsorption parameters are: the content of chlorogenic acid is 0.204 mg per mL adsorption solution, the acidity of adsorption solution is 4, the adsorption velocity of flow is 3 mL per min, the eluent is 30% ethanol, the eluting speed is 1.5 mL per min and the eluents volume is 4 times of resin volume. In the optimal adsorption condition, the final yield of CHA is 5.06%. the content of chlorogenic acid is 78.26% in dry productin.
通过对比8种大孔吸附树脂对绿原酸的吸附效果,选用对绿原酸吸附解吸性能均较好的树脂对绿原酸吸附,吸附参数如下:吸附液绿原酸的浓度为0.204mg/mL、吸附液pH值为4、流速为3mL/min,解吸参数如下:解吸剂为30%乙醇、解吸剂流速为1.5mL/min、解吸剂使用量为4倍树脂体积,在此条件下,绿原酸得率为5.06%,产物中绿原酸含量为78.26%。
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Under the condition that the flux function has one inflection point, by the structure of weak entropy solution of the corresponding initial value problem and the boundary entropy condition developed by Bardos-Leroux-Nedelec, we give a construction method for the global weak entropy solution of the initial-boundary value problem arid clarify the solution structure nearby the boundary.
在流函数具有一个拐点的条件下,由相应的初始值问题弱熵解的结构和Bardos-Leroux-Nedelec提出的边界熵条件,给出初边值问题整体弱熵解的一个构造方法,澄清弱熵解在边界附近的结构。
- 相关中文对照歌词
- Formaldehyde
- Love Solution
- Second Solution
- Reliquary
- The Solution
- Bite Your Rhymes
- Revolution
- When I Meet God
- Solution
- The Solution
- 推荐网络例句
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The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.
他说,使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。
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Not a single word have I written down.
我一个字也没有写下来。
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My grandma is really a pack rat.
我奶奶是一个什么都不舍得扔的人。