中值
- 与 中值 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Sulfur isotope of franeolite indicate that sulfur isotope value of phos phate concretion is larger than that of evaporite sulfate, there is little doubt that sulfur isotope fraetionation happens during phosphorite diagenesis, heav ier sulfur is laid in sediments because of formation of H〓S.
磷结核的稳定S同位素测试表明:其值大于同时代海水蒸发盐的值,这是由于在成岩作用过程中发生了S同位素分馏,生成H〓S,从而使沉积物中富集〓S。
-
In the distillation column with a single reactor, the outer loop reactor is designed and applied. The reaction dynamics datas of photochlorination of acetic acid in the reactor were tested. According to parallel-consecutive reaction dynamics model, the parameters were fitted and the model result tallys experiment result well.
在背包式反应精馏装置中,采用了外环流反应器,实验测定了该反应器中乙酸光氯化的反应动力学数据,采用平行-连串反应动力学模型进行了参数拟合,所得模型计算值和和实验值吻合较好。
-
Compared with the parent strain ②, the glutathione concentration in the main fermentation broth of strain A 27 increased by 20%, the carbonyl compound content decreased by 14%, and the flavor resistance staling value increased by 37%.
在锥形瓶中连续发酵 5代后,与A2 7菌株相比,MI4 菌株发酵液中GSH浓度高4 4 %,TBA值低 2 4 %,主酵液RSV值高 77%,且遗传稳定性明显提高:连续传代 5次后,MI4 菌株胞内GSH含量基本不变,而A2 7菌则下降了 2 2 %。
-
Methods Conjugated with protein precipitation with trichloroacetic acid, BCA method was used.
使用三氯乙酸沉淀蛋白质后,运用BCA法,在570 nm波长处,分别测定标准蛋白质应用液与样品稀释液的吸光度值,基于测定液中蛋白质含量与其吸光度值呈正比关系,计算出样品中蛋白质的含量。
-
As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.
对于高极性、高沸点的固体产物均苯三甲酸,分别采用红外光谱、气质联用、气相色谱、酸值滴定等分析手段进行了表征:利用红外光谱、气质联用的方法进行产物的定性分析,并与在同一仪器、同一条件下做出的标准谱图进行比对;采用硫酸-甲醇酯化法和快速酯化法制备出均苯三甲酸三甲酯,对其进行气相色谱FID定量分析,进而确定固体产物中均苯三甲酸的纯度;用酸碱滴定法确定固体产物的酸值,以对固体产物中均苯三甲酸的纯度进行验证。
-
The results showed that elevated CO2 increased the R/S ratio and the dry mass of both coarse and fine roots, indicating that the seedlings under elevated CO2 allocated more biomass to their belowground part. Compared with control, elevated CO2 increased the contents of reducing sugar, sucrose, and total soluble sugar in coarse roots significantly, but had less effect on those in fine roots. Elevated CO2 increased the contents of starch and total non-structural carbohydrate both in coarse roots and in fine roots. Under elevated CO2, the carbon content in coarse and fine roots had an unsignificant increasing trend, while the nitrogen content decreased significantly, which resulted in an increase of C/N ratio.
结果表明:CO2浓度升高使红桦幼苗粗根和细根的干质量增加,同时根/冠值显著升高,表明CO2浓度升高使红桦幼苗生物量向根系的分配增加;与对照相比,粗根的还原糖、蔗糖和总可溶性糖含量显著增加,而在细根中没有显著变化;粗根、细根的淀粉和总的非结构性碳水化合物含量显著增加;CO2浓度升高下粗根和细根的碳含量有升高的趋势但未达到显著水平,同时氮含量降低,碳/氮值升高;氮的吸收量在粗根和细根中均无显著变化。
-
The results showed that elevated CO2 increased the R/S ratio and the dry mass of both coarse and fine roots, indicating that the seedlings under elevated CO2 allocated more biomass to their below- ground part. Compared with control, elevated CO2 increased the contents of reducing sugar, sucrose, and total soluble sugar in coarse roots significantly, but had less effect on those in fine roots. Elevated CO2 increased the contents of starch and total non-structural carbohydrate both in coarse roots and in fine roots. Under elevated CO2, the carbon content in coarse and fine roots had an unsignificant increasing trend, while the nitrogen content decreased signifi- cantly, which resulted in an increase of C/N ratio.
结果表明:CO2浓度升高使红桦幼苗粗根和细根的干质量增加,同时根/冠值显著升高,表明CO2浓度升高使红桦幼苗生物量向根系的分配增加;与对照相比,粗根的还原糖、蔗糖和总可溶性糖含量显著增加,而在细根中没有显著变化;粗根、细根的淀粉和总的非结构性碳水化合物含量显著增加;CO2浓度升高下粗根和细根的碳含量有升高的趋势但未达到显著水平,同时氮含量降低,碳/氮值升高;氮的吸收量在粗根和细根中均无显著变化。
-
Insufficiently flexo printing process for formulating process on the basis of specific criteria, such as the smoothness of the paper, ink roller parameter, the gray balance data to determine the seihan process; in business card printing and membership card manufacturing process, because the Ink viscosity, xerotic were affected by pH, firmwith pH control ink; taking into account the flexographic business card printing and membership card making serious than dot gain, offset printing with offset printing, you must set the business card printing and membership card making pressure adjustment to the minimum.
在烟包柔印工艺的制定过程中,要根据具体的工艺条件,诸如纸张的平滑度、网纹辊参数、油墨的灰平衡数据等确定制版工艺;在制卡和会员卡制作过程中,由于水性油墨的黏度、干燥性均受到pH值的影响,因此要严格控制油墨的pH值;考虑到柔版制卡和会员卡制作网点扩大比胶印严重,同胶印一样,必须将制卡和会员卡制作压力调整到最小。
-
The selected process consists of several steps as follows. Firstly, ammonifying the oily mixture of PXA pyrolysis by ammonia or aqueous ammonia, then adding the organic solvent to extra
实验结果表明,合适的分离提纯工艺为:先将裂解产物用氨水氨化、有机溶剂萃取,然后用硫酸酸化11-CUA铵盐水溶液、再将粗品11-CUA于合适介质中结晶,得到高纯度11-CUA晶体;优化工艺条件为:氨化pH值8.0~10.0、温度25-35℃,甲苯为萃取剂,酸化pH值1.5~2.0、温度55-60℃,环己烷为结晶介质,粗品11-CUA在环己烷中溶解温度50~55℃、与环己烷初始质量比4:100、结晶前沉降分层时间10min、结晶温度20℃。
-
Moreover, it overcomes or avoids the man-made factors and more truly inflects the value of oil solved gas of transformer.
同时,在线色谱分析还可以克服和避免常规油分析中的人为因素影响,比较客观地反映了变压器油中溶解气体的实际值,对通过阈值诊断报警意义较大。
- 推荐网络例句
-
Do you know, i need you to come back
你知道吗,我需要你回来
-
Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
-
Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。