浓度

When the concentration of boletus Edulis Bull polysaccharide is about 0.04 mg/mL,the ability of scavenging hydroxyl radi...

OH的能力与0.02mg/mLVc的能力相当；对浓度为0.1mg/mL的多糖溶液，其清除率达到71.78%。对于O2-。自由基，在浓度为0.04mg/mL时，抑制率达到79.34%。

The effects of SDS concentration, borax concentration, buffer pH, column temperature on migration time and separation were discussed.

讨论了SDS浓度、硼砂浓度、缓冲溶液pH、柱温对迁移时间和分离的影响。

The treatment which had the smallest effect on the soil catalase was the Bordeaux mixture treatment of 200mg·kg-1 and equal-times.

不同浓度波尔多液对土壤过氧化氢酶活性总体呈现低浓度激活、高浓度抑制作用。

Exercise-induced changes in branched chain amino acid/aromatic amino acid ratio in the rat brain and plasma.

大鼠持续运动时可见血浆支链氨基酸浓度与芳香族氨基酸浓度升高，然而力竭时却发现两者比值明显下降。

The breakdown potential kept in high level when the Cl(superscript -) concentration was not more than 0.1 mol/L, while it dropped sharply with the continuous increase of C1(superscript -) concentration.

溶液中的Cl浓度很低时（不超过0.1mol/L）点蚀电位较高，随着Cl浓度的增加，点蚀电位急剧下降。

On the basis of the pressure correcting method about the measurement of bubble size distribution a photoelectrical capillary probe technique with a micro-computer on line was successfully used to study in detail the effects of various operating parameters such as gas rate, feed rate, feed concentration, NaCl concentration in solution, gas bubbler and gas bubbling state on bubble and foam bubble size distributions in foam fractionation column.

在已建立的光电毛细探头技术测定气泡尺寸分布的压力校正方法基础上，应用光电毛细探头微机在线测量方法，研究了各种操作参数，如气体流速、进料量、进料浓度、溶液中NaCl浓度、气体分布器以及布气状态等，对泡沫分离塔内气泡和泡沫气泡尺寸与分布的影响。

In this experiment,we studied the effects of different medium on the bulblet formation,condition of growth and rooting.

针对不同培养基对百合苗增殖情况、长势及生根情况等方面进行了研究，结果表明，在高无机盐浓度并附加高浓度BA和低浓度NAA的培养基上适合百合苗的继代培养。

When cultivated in medium with a certain level of antibiotic, the percentage of callus inducing of cotyledon burl is always the same, while the percentage of callus inducing of leafsteak is different.

在一定浓度抗生素的培养基中，子叶节的愈伤组织出愈率均为100%，而叶柄的出愈率在不同的浓度下会有明显的不同。

When you print, make sure that a clean glass plate burning, no dirt, use a soft, fibrous materials, so as not to scratch the surface of the glass;(2) make sure that the exhaust gas pumping clean to avoid exposure of incomplete, dot ambiguous waste plates;(3) choose to design a reasonable moisture、illumination uniform lighting, General wavelength in the range 450nm 350 MW to 750 MW is the best light source;(4) to determine the reasonable exposure time, you can use transmissional laodelphax wedges or the Chief harunar test to determine the net-point-to-value, select the exposure time; and (5) according to the developering concentration and temperature changes in the regulation of the speed of the treatment of development machine, such as temperature and concentration to speed up the pace of the appearing of the appearing on the other hand reducing speed so as to ensure the quality of the treatment of development; the treatment of development has been completed, plates well-proportioned coating protect the plastic and put it in place with dry.

1晒版时要包管晒版玻璃肮脏，无污物，用质地刚软的纤维货色擦拭，以免划伤玻璃背；(2)抽气时必定不兵气体抽肮脏，制止曝光不彻底，网不背不澄辉而爱惜印版；(3)拔取安排公道、光照平均的灯具，凡是波长在350～450nm边界边为最好光源；(4)猜测公道的曝光工夫，可以用透射灰梯尺或布鲁纳尔尝试条，猜测网不背成数，拔取曝光工夫；(5)根据显影液的浓度和温度改变环境调度显影机的不缓率，如温度和浓度功矮，可不收慢显影不缓率，反之贬低显影不缓率，以包管显影质度；(6)显影达成后，在印版表背平均涂布爱护胶，然后不收在透风处潮湿。

The result shows that the main factors,which affect the technical quality of the cathode assembly preparation,are surface oxidization of emissive layer,impurity pollution,doped concentration nonuniform,less variation of doped concentration gradient,the sticking stress of GaAs and glass,and the main factors,which affect the cathode activation,are the degree of vacuum for activation at lower than 8x10-8Pa,the partial pressure of H2O,CO,CO2 and C in the vacuum residial gas at higher than 10-8 Pa and the improper caesium and oxygen refining.

结果表明，影响台外工艺质量的主要因素是外延材料缺陷多、发射层表面氧化、杂质污染、掺杂浓度不均匀、掺杂浓度陡度变化小及GaAs与玻璃粘接产生的应力大；影响台内工艺质量的主要因素为阴极激活真空度低于8×10-8Pa。真空残气H2O.CO.CO2及C分压大于10-8Pa。阴极激活铯和氧源提纯不彻底。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐