查询词典 concentration of

Using these diagrams, thermodynamic analysis is carried out to show the effect of technical conditions on soda decomposition of scheelite. It appears that the concentration of has direct effect on soda decomposition of scheelite. When the alkalinity is low, will hydrolyze to , accordingly the decomposition rate of scheelite becomes lower because of the decrease of . So in order to get higher leaching rate in industry practice, it is necessary to use enough amount of soda to serve as digestion reagent and, certain amount of NaOH to maintain high enough alkalinity.

利用这些热力学平衡图对Na2CO3分解白钨矿的工艺条件进行了分析，认为溶液中浓度直接影响白钨矿分解，而当碱度较低时，Na2CO3将水解生成，从而降低浓度，进而降低白钨矿的分解率；故在工业实践中，为使钨最大限度地转入溶液，除了保证足够的Na2CO3用量，还必需添加NaOH以维持一定碱度。

The influence of each condition on the reaction speed and yield was studied, and the optimal conditions were: the ratio of the amount of substance of aromatic amine and heptafluoro-isopropyl iodine was 1:1.1~1.5, the amount of substance of sodium dithionite, sodium bicarbonate, aniline compounds were respectively 1.1~1.3, the amount of substance of phase transfer catalyst TBAB and aniline compounds was 0.05~0.1, the concentration of aniline compound was 0.5~1.0 mol/L, reaction temperature was 10~20 ℃, and the solvent was aether.

最佳结果为：芳胺与七氟异丙基碘的物质的量比1：1.1~1.5，连二亚硫酸钠、碳酸氢钠与苯胺的物质的量分别为1.1~1.3，相转移催化剂四丁基溴化铵与苯胺的物质的量比在0.05~0.1，溶剂总用量使苯胺浓度在0.5~1.0 mol/L；反应温度10~20℃；溶剂采用乙醚。取代基供电子性越强，反应时间越短，产率越高；氨基的对位优先反应，氨基的邻位较难发生反应；且七氟异丙基总是优先取代在芳环电子云密度较高的位置上。

As two factors, the changes of concentration of DNA and dose rate are of significance in the study of DNA damage induced by irradiation.

在进行辐射致DNA损伤中，DNA浓度和剂量率是两个重要的因素。

The effects of different concentration of NaCl and Na2SO4 double salt solution stress on the seed germination and seedling ability of salt tolerance of seven oat varieties were studied using the standard block method.

为给燕麦抗盐育种和栽培提供理论依据，用不同梯度的NaCl和Na2SO4复盐溶液胁迫处理7个燕麦品种，研究了盐胁迫对燕麦种子萌发、幼苗生长和叶片质膜透性的影响。

The experimental study of CBAB implanted in muscle of rabbits. In order to study implanted CBAB's dynamic biomechanics strength, its affection on tissue around and the concentration of Ca and P in blood, and to obsreve whether ectopia osteogenesis occure or not, we implanted CBAB samples, which were compounded in the proportion of 1 g CPC powder to 5 mg BMP, into rabbits'thigh flexor.

为了研究CBAB植入动物体内对外周血钙、磷水平的影响、CBAB的动态生物力学强度变化和生物学行为，为进一步进行CBAB用于骨填充的研究和应用提供理论基础和方法积累，按1 g CPC固相配5 mg rhBMP-2的配比将CPC与rhBMP-2复合成CBAB，经手术植入于兔大腿屈肌中。

Northern analysis indicated that expression efficiency of the bar gene driven by DCA1 promoter was regulated by the gradient concentration of sodium chloride, and the positive blotting signal intensity of the bar mRNA was highest in the medium containing 2 mol/L of sodium chloride.

Northern印迹分析表明：DCA1基因启动子驱动bar基因在杜氏盐藻细胞中的表达效率受氯化钠浓度梯度调控。

Furthermore, supplements of callus induction medium under N6 basic medium,such as concentration of 2,4-D, proline and casein hydrolysate were used to study their effects on the induction frequency,embryogeny and quality of callus,the inhibition of embryo spontaneous shooting.

幼胚在附加4 mg/L 2，4-D且去掉水解酪蛋白和L-脯氨酸的N6改良培养基上，幼芽及根的数量少、出愈率高、愈伤组织质地好，并明显减少了幼胚自发性芽分化的趋势，有利于保持愈伤组织胚性、提高再生植株频率，为玉米自交系幼胚诱导的适宜培养基。

It is…evident that the members of each department should be as little dependent as possible on those of the others, for the emoluments annexed to their offices… But the great security against a gradual concentration of those several powers in the same department consists in giving to those who administer each department the necessary constitutional and personal motives to resist the encroachments of the others.

它是证据，每个部门的成员应该依靠一样少许尽可能那些其他，为了薪水对吞并他们的办公室…但是反对那些几力量的逐渐集中的巨大安全在同一个部门的在给包括执行每个部门必要的宪法和个人动机抵抗其他的侵犯的那些人。

The results show that the yield of butyl acetate using the catalysts prepared with the concentration of H2SO4 by 0.5 mol·l-1 and the calcination temperature of 550℃ is the best,which is up to 52.5% when the molar ratio of butyl alcohol to acetic acid is 1:1.3 and without addition of entrainer in the hermetic reactor.

结果表明采用硫酸浸渍液浓度为0.5mol/L，焙烧温度为550℃时所制备的催化剂在正丁醇和乙酸的物质的量比为1.3及不添加任何带水剂的密闭条件下酯化效果最好，酯化率为52.5%。

The effect of antimicrobial activity depends on species of enzymolysis, concentration of chitooligosaccharide and categories of pohytopathogenic fungi.

抑菌效果因壳聚糖酶的酶切方式、壳寡糖的质量浓度和供试菌种而异。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！