浓度

Cotton cloth is generally scoured with a delute solution of sodium hydroxide (lto 3 percent, based on the weight of the cloth).

棉织物一般在浓度较低的氢氧化钠溶液中煮练(浓度为1%-3%，浓度的大小取决于织物的重量)。

At high CaCl_2 concentration, when the product of the free Ca~(2+) ion concentration in solution and the monomer surfactant concentration exceeds the solubility product of Ca_2 salt, Ca_2 precipitates can be salted out in this system.

在较高的CaCl_2浓度下，溶液中游离的Ca~(2+)离子浓度与表面活性剂单体浓度的乘积超出Ca_2的溶度积时，体系中会析出Ca_2沉淀。

The effect of three common hydro-chemical factors,such as univalent cation concentration(Na+ ion concentration),bivalent cation concentration(Ca2+ ion concentration) and pH value on clay particles releasing in sand column was studied through batch test.

通过批量试验，对一价阳离子浓度，二价阳离子等，浓度(Ca2+浓度)和pH值三个最常见水化学因素对砂柱中粘土颗粒释放的影响进行了研究。

Therefore, this experiment that 75 mg / L concentration of the most appropriate for future experiments in the screening of the large concentration of rye grass seed, can be eliminated with this concentration of poor resistance to many of the seeds and improve the quality of ryegrass seed plants can enhance fertility.

所以，本实验的认为75mg/L的浓度最适宜作为今后实验中筛选黑麦草种子大的浓度，用此浓度即可淘汰许多抗性差的种子，提高黑麦草种子的质量增强植株可育性。

Methods Explore the optimal concentration of phurbol-12-myristate-acetate and calcium ionophore (A23817) inducing time, and optimal concentration of biotinyl sheep anti mouce IgG (bio-SAM-IgG) and horse radish peroxidasestreptavidin. The CD4(superscript +) cell enriched from peripheral blood mononuclear cells using solid phase anti-CDs monoclonal antibodies were induced by PMA and A23817 under influence of monensin and harvested in vary hours.

从健康人外周血单个核细胞中富集CD4细胞，加入莫能霉素，用不同浓度的佛波醇酯和钙离子载体(A23817)诱导CD4细胞不同时间，比较其胞内表达白细胞介素－2(IL-2)/白细胞介素－4(IL-4)的细胞百分率，确定最适诱生条件；用不同稀释度的IL-2McAb、IL-4McAb、不同浓度的生物素化羊抗鼠IgG(bio-SAM IgG)和辣根过氧化物酶标记的链霉亲和素作棋盘配比试验，确认McAb、bio-SAM IgG和HRP-SA的最适浓度，根据上述结果建立了检测细胞内细胞因子的BSA-ICC法。

The results showed that the removal rate of TN and TP increase with the increase of wastewater concentration.

结果表明，TN、TP的去除率随污水浓度升高而升高，水培液中TN、TP浓度随污水浓度升高而降低。

Professional body oils are at a 3% concentration, facial oils and other skincare products are between 1-2%, while retail bath and shower oils are at 30% concentration, to recreate benefits at home.

专业的身体用油是3%的浓度，面油和其他护肤产品是1-2%的浓度，而零售的泡浴和淋浴的用油是30%的浓度，可以在家中非常方便地进行护理，享受产品的好处。

An equation is derived by theoretical analysis, to establish a relationship between suspended sediment concentrations and ADCP echo intensity output. For the survey at the entrance to Jiaozhou Bay, an ADCP is mounted on a moving vessel; the calibration coefficient in the equation is determined by in situ measurement. Then, a semi-empirical formula is obtained and used to calculate suspended sediment concentration profiles along several crosssections.

理论分析获得了海水中悬沙浓度与ADCP输出的回声强度之间的函数关系式；在胶州湾口门进行走航式测量，同步采水样进行现场校正来率定相应的ADCP声学信号，获得了计算悬沙浓度的半经验公式；进而得到走航断面准同步的悬沙浓度剖面。

In order to obtain the fire parameters of cable tunnels and study the time-dependent and spacedependent distribution of the air temperatures and fire smokes inside the tunnels, cable tunnel model is established and fullscale fire simulation is made by means of FDS developed by NIST (National Institute of Standards and Technology). The distribution pattern of the smoke density, oxygen density and temperature are obtained by means of processing and analysis of the experiment data, so as to provide some effective methods for fire-fighting, rescuing and escaping. Furthermore, some suggestion is made on fire prevention.

为了获取电缆隧道火灾参数，研究隧道内空气温度及火灾烟雾浓度随时间、空间的分布情况，利用NIST (美国国家标准和技术研究院)研发软件FDS，建立电缆隧道模型，进行全尺寸火灾模拟，通过实验数据处理和分析，给出了电缆隧道发生火灾时烟气浓度和氧气浓度以及纵向温度的变化规律，为现实火灾救援灭火、人员逃亡提供一些有效方法，并对火灾预防提出一些建议。

The phosphorous acid industry in China is now facing the problems of shortage of energy sources and run-up of power price,and the market competition ability of phosphorous chemicals which use phosphorous acid from furnace process as the material is going down gradually.

采用正交实验，研究了高倍半氧化物含量的中低品位磷矿在磷酸与硝酸混酸中的酸解行为，并确定了实验室最佳工艺条件：反应温度65℃，液固比14∶1，磷酸浓度(P2O5)20%，硝酸浓度9.50g/L，添加物KDD浓度5.50g/L，反应时1h。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！