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Analyze the influencing factors and calculate means of the sludge concentration identification of mixtures in aeration tanks,then deduct the theoretical calculation formula of the sludge concentration in mixtures on the relationships between oxygen tranasfer velocity and the oxygen demand in aerations.

就曝气池混合液污泥浓度确定的影响因素及方法进行了分析，并根据氧的转移速率与曝气池需氧量的

The regulation showed: land use diversity and combination types of land use were increased from suburb to distant suburb plain and half coteau. The opposition trend was presented on the change of the concentration index of land use. As distant suburb coteau was controlled by the background of mountain, the land use diversity index was minimum and the concentration index was maximum.

北京市土地利用格局的区域差异呈现如下规律：土地利用多样性和土地利用组合类型数由近郊向远郊平原、远郊半山区依次递增；土地利用的集中程度则刚好相反；远郊山区由于受大环境背景山地控制，土地利用多样性在各区中是最小的，而集中程度则是最大的。

A simple and efficient method for concentration of enteroviruses from water sample was established based on the membrane adsorption-elution method combined with eluant concentration.

文章摘要：在膜吸附-洗脱和洗脱液浓缩相结合的基础上，建立了一种简便实用的水中肠道病毒浓缩方法，通过实时定量RT-PCR检测，比较了不同材料和不同孔径的微孔滤膜对病毒的吸附效果；对膜洗脱方式进行了改进；研究了在洗脱液浓缩过程中，PEG浓度对于病毒回收率的影响。

The effect of DL-malic acid concentration, methanol concentration, flow-rate of eluent and temperature on the retention time was studied.

研究了DL-苹果酸浓度、甲醇浓度、流速和温度对各离子保留时间的影响。

The proper concentration of SNA for canning pine-apple in 100ppm. High concentration of SNA also decrease the storage life of fruit and cause rot. Therefore, it is not recommended for fresh pine-apple for export, except in case of spring fruit, 50 ppm of SNA will improve the peel color and with no adverse effect on storage of fruit.

SNA在凤梨果实发育中期处理时，采果后果实之贮藏力减低且易腐烂，尤以处理之浓度愈高者愈甚，故为提高鲜凤梨之品质及贮藏力，应禁止用植物生长素处理为原则，但50ppm低浓度处理有增加果皮色之效果，且对品质及贮藏力之影响亦小，为提高凤梨春果之外观，勉强可使用。

There was an obvious effect of different N, P and K application rates on N, P, K concentration of stem, leaf, rhizome and total ginger plant in each growth period, the uptake and accumulation of nutrient and distribution increased greatly. Ginger in the treatments of moderate fertilizer application rate of N450, P120 and K450 had a higher N, P and K concentration, which resulted in the increase amount of nutrient uptake and accumulation.

施用不同数量的氮磷钾对各生育期生姜茎、叶、姜各部位及全株N、P、K含量和养分吸收积累量、养分分配有明显影响，中等施肥量的N450、P120和K450处理在整个生育期含N、含P和含K量均较高，养分吸收量和积累量显著增多。

The effect of operating parameters-enzyme concentration, substrate concentration, time, pH and temperature-on the degree and the speed of hydrolysis of hydrolysed protein is measured using colorimetic method.

分析了底物浓度、酶浓度、时间、pH和温度对DH、水解速度的影响。

The results showed S curve for effects of NaCl stress on germination of watermelon seed, the middle point between two inflexions of the curve was at 120mmol/L and could be used as referenced screening concentration to study 'ZQK0395' salt tolerance genetics, the second curve inflexion was at 180mmol/L and could be used as referenced concentration for 'ZQK0395' salt-tolerant germplasm selection.

结果表明，NaCl胁迫对种子发芽的影响呈S型变化曲线，120mmol/L为S型曲线两个拐点中间值，可作为该种质资源耐盐性遗传研究的参考鉴定浓度，180mmol/L为S型曲线的第二个拐点，可作为该种质资源耐盐性参考筛选浓度。

The RMSE between measured Chl a concentration and the Chl a concentration estimated by the three-band model based on MERIS bands is 6.47 mgm^(-3), demonstrating the robustness of this algorithm for MERIS Chl a retrieval.

根据MERIS的波段设置构建的三波段模型估算的叶绿素a浓度与实测叶绿素a浓度的RMSE为6.47mgm^(-3)，显示了良好的应用潜力。

When the other conditions were stable, the effect of different concentration of the microinjected DNA, and different timing of micromanipulation in CZB medium, different quality of zygotes on microinjection was investigated in vitro. Results: The higher the concentration of the microinjected DNA, the worse the development of zygotes.

获取小鼠受精卵，在其他条件固定的情况下，分别比较不同的注射基因浓度，在CZB操作液中显微操作时间以及注射前受精卵的质量对显微注射后的胚胎体外培养结果的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷