用量

The method had the advantages of minor amount of the solvent, and lower operation temperature in the separation process, and pentane could be produced .

该工艺具有溶剂用量少、操作温度低的优点，同时还能副产正戊烷。

Both pyrrhotite and pentlandite are also oxidized by Fe(superscript 3+) besides direct bio-oxidation.

黄铁矿氧化时间大致是其他两种矿物的3倍，因而工业配矿可酌量降低富含黄铁矿之金精矿用量。

Extracting conditions such as temperature,the concentration of sulfuric acid are optimized.Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90 ℃,with mass ratio of l...

实验结果表明，在MnO2用量3%、温度90℃、液固比2∶1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1 500 r/m in的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90℃, with mass ratio of liquid and solid being 2:1, usage of manganese dioxide being 3%, with concentration of sulfuric acid of 20%, and mixing speed at 1500 r/min. It is about 10% higher than roasting. Environmental pollution and energy consumption can also be effectively controlled.

实验结果表明，在MnO2用量3%、温度90℃、液固比2：1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1500 r/min的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

Finally, pentyl acetate and benteine could be respectively synthesized by esterification reaction in the presence of nanometer rare earth composite solid superacids (SO_4)~(2-)/ZrO_2-Gd_2O_3 and (SO_4)~(2-)/ZrO_2-Nd_2O_3. The effects of reaction time, reaction temperature, the mol ratio of acid to alcohol and the use level of catalyst on esterification yield were discussed. In the end, we obtained their optimal reaction conditions.

采用纳米稀土复合固体超强酸SO_4~(2-)/ZrO_2-Gd_2O_3，SO_4~(2-)，~/ZrO_2-Nd_2O_3分别合成了乙酸戊酯和乙酸苄酯两种香料，实验考察了反应时间、反应温度、醇酸比及催化剂的用量对酯化率的影响，并由此得出反应的最佳条件。

The effect of the amount of silica powder and sulfuric acid employed as well as polyacrylamide added on the properties of the gel electrolyte was studied and the mechanism of the peptization of silica powder to form thixotropic silica gel electrolyte was discussed.

研究了SiO2粉末和H2SO4用量及聚丙烯酰胺添加量对凝胶电解液性能的影响，并分析讨论了SiO2粉末胶溶形成触变性硅凝胶电解液的机理和特点。

Put forward the viewpoint of denoting the rigidity of media by peptonization intensity(g/cm2).Ascertained that the peptonization intensity of initial media is 160-170 g/cm2,that of subculture and rooting media is 150~160 g/cm2.4 Experiment on sugar source of media.

培养基琼脂用量计算的依据通过试验，提出用胨力强度(g/cm~2)表示培养基硬度的观点，并确定了初代培养基胨力强度为160～170g/cm~2，继代培养基、生根培养基均为150～160g/cm~2。

Synthesis of dimethyl fumarateby esterification of fumaric acid with methanol catalyzed by solid su- peracid SO_4~(2-)/TiO_2was proposed in this paper.

以SO_4~(2-)/TiO_2固体超强酸为催化剂催化富马酸与甲醇合成富马酸二甲酯，探讨了催化剂制备条件、原料配比、反应时间、催化剂用量等因素对富马酸二甲酯收率的影响。

Results The percolate rate, concentration and quantity of alcohol had significant effects on the process.

结果 乙醇浓度、乙醇用量、渗漉速度均对三七提取工艺有显著影响。

It can be described as the case in which the supply curves of all factors, including those of which the maximum amount available to the firm is fixed, are perfectly elastic to the industry, or in which there are no "specialized factors."

这种情况也可说成：所有要素——包括那些对厂商而言最大可用量固定的要素——的供给曲线，对行业而言都是完全弹性的，或者干脆说，其中没有"特殊要素"。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。