浓度

Comparing with water, the optimal heat transfer enhancement is achieved near the critical micelle concentrations of surfactants. The degree of heat transfer enhancement is different with different surfactants and is influenced by solubility characteristic, ionic nature and chemical structure of surfactants. Boiling in surfactant solutions, when compared with that in water, is observed to be more vigorous with smaller-sized, more regularly shaped and faster departure frequency bubbles, but the surfactant solutions of Triton X-100 and Triton X-114 become cloudy for the cloud point of surfactants.

和水相比，表面活性剂强化池内核态沸腾换热的最佳浓度为临界胶束浓度；不同种类表面活性剂强化换热程度不同，它们与表面活性剂的溶解特性、离子类型和化学结构有关；溶液沸腾时，沸腾汽泡的脱离直径变小，脱离频率变快和更不易聚集，但非离子表面活性Triton X-100和Triton X-114由于存在浊点其沸腾溶液变浑浊。

The ionizer can keep the NAIs concentration above 3.02×105 ions/cm3 in the breathing space. This study investigated the distribution of control efficiency for four kinds of bioaerosols, and compared the difference of them.

研究结果发现，空气负离子在呼吸范围中的浓度分布在面部前方5 cm处最高，随与空气负离子产生源距离增加而衰减，由於面部会中和负电荷，故也会使空气负离子浓度骤减。

In the study on the relation of wastewater concentration and nitrogen and phosphorus purifying effects of plant-hydroponic wastewater system with Ipomoea aquatica as hydroponic plant,3 concentrations(5%,10%,20%)of cesspool wastewater were set up and the TN,NH4+-N,fTN,PO43-P,fTP,CODCr and fCODCr were determined at 0,2,4,6,8 and 11 day resp.

在植物水培污水净化系统中对污水浓度与氮磷净化效果间的关系进行研究，蕹菜作为水培植物材料，对设置5%、10%、20%不同浓度的化粪池出口污水，分别于第0、2、4、6、8、11 d测定TN、NH4+-N、过滤后总氮、总磷、PO43-P、过滤后总磷、CODCr、过滤后COD。

In the study on the relation of wastewater concentration and nitrogen and phosphorus purifying effects of plant-hydroponic wastewater system with Ipomoea aquatica as hydroponic plant, 3 concentrations （5 %, 10 %,20 %） of cesspool wastewater were set up and the TN, NH4^＋-N, fTN, 19043 p, fTP, CODCr and fCODCr were determined at 0, 2,4,6,8 and 11 day resp.

在植物水培污水净化系统中对污水浓度与氮磷净化效果间的关系进行研究，蕹菜作为水培植物材料，对设置5％、10％、20％不同浓度的化粪池出口污水，分别于第0，2，4，4，6，8、11d测定TN、NH4^＋。N、过滤后总氮、总磷、PO4^3、过滤后总磷、CODCr、过滤后COD。

The results indicate that CdS nanorods synthesized by soft template method are below 100 nm in diameter and above 3 nm in length, and low irradiative dosage and concentration of reactants can accelerate the formation of CdS nanorods with higher length-to-diameter factor about 30∶1 range.

研究表明，该方法在Cd2+浓度为0.015 mol·L-1、辐照剂量为15～20 kGy时，可获得直径在100 nm以下，长度在3 μm以上的CdS纳米棒；并且较低的辐照剂量和反应物浓度有利于获得较大长径比的CdS纳米棒。

Target plasma concentration was first set at 50 n g/mL and increased 50 ng/mL each grade until the patients were irresponsive to t actile stimulation.

初始靶浓度设定为 5 0ng/mL ，其后以 5 0ng/mL的浓度梯度递增直至镇静评分为 1分，然后以5 0ng/mL的梯度逐步降低。

Kinetics of isobutylene hydration reaction catalyzed by fine powder of NKC-9 ion exchange resin,and effects of catalyst concentration,temperature,pressure,stirring rate and isobutylene concentration on reaction were studied in a semibatch reactor.

采用半连续反应过程，使用NKC -9离子交换树脂细粉，改变催化剂浓度、反应温度、反应压力、搅拌转速和异丁烯浓度等条件，对异丁烯水合反应动力学进行了实验研究。

It discovered that increasing alcohol is equal to reducing water in order to improve the isocyanate proportion reacted with alcohol.

研究揭示，为了提高异氰酸酯与醇反应的比例，增加竞争反应体系中醇浓度或降低水浓度是等效的。

When the concentration of alcohol is same with the water, there is 77.89% consumed isocyanate reacted with water. When the concentration of water is 2 times as alcohol, more than 90% isocyanate reacted with water.

当体系中醇与水的浓度相同时，反应了的异氰酸酯基中有77.89%与水反应；当体系水的浓度是醇的2 倍以上时，将有90%以上的异氰酸酯基与水反应。

In this paper, the method and some skills of drawing isogram and leeward axial graph of concentration about diffusion of contaminant in environmental forecasting are presented.

本文介绍了在大气环境影响预测分析中污染物诉散的浓度等值线图和下风向轴线浓度图的作图方法和某些技巧。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。