酸性的

Samples were saponified with 20 g/L sodium hydroxide. The sexual hormones were then extracted with dichloromethane-acetic acetate (40∶1, v/v) under acidic conditions (pH 3, adjusted with 1 mol/L HCl ). An XTerraTMRP18 column was employed and a mixture of water-methanol-acetonitrile (50∶32∶18, v/v) was used as mobile phase. The seven sexual hormones were detected at 230 nm. The average spiked recoveries for the seven sexual hormones ranged from 75.6% to 97.8% with relative standard deviations of 1.9% to 7.2%. The linear ranges of determination were from 5 to 50 mg/L with correlation coefficients of 0.9999, and the limits of detection were from 3.7 to 12 ng.

先在试样中加入20 g/L氢氧化钠溶液与油脂进行皂化反应，然后用二氯甲烷-乙酸乙酯(体积比为40∶1)混合液在酸性条件下(pH 3)萃取，选择XTerraTMRP18色谱柱，以水-甲醇-乙腈(体积比为50∶32∶18)混合液为流动相，在波长230 nm处检测。7种性激素分离良好并排除了样品中杂质峰的干扰，低、高浓度平均回收率范围为75.6%~97.8%；相对标准偏差为1.9%~7.2%；检出限为3.7~12 ng。

Objective To explore the antigen presentation of eosinophils to sensitized T lymphocytes in vitro .

目的 探讨嗜酸性粒细胞在体外培养条件下将抗原呈递给致敏T淋巴细胞的机制。

Objective To explore the antigen presentation of eosinophils to sensitized T lymphocytes in vitro.

摘 要：目的探讨嗜酸性粒细胞在体外培养条件下将抗原呈递给致敏T淋巴细胞的机制。

6Moreover measures to control acid rain by liming in polluted area to neutralize resulted in reducing averagely 0.13 pH of soil, and the element content in soil had been improved gradually. The number of microbes had been increased in the No.2, No.3 and No.4 plots in polluted area. The quantity of bacteria had sored to 8.0×109per kilogram soil and N2-fixing bacteria also get 2.5×107per kilogram soil in Spring.

其中最理想的施石灰量为20-30Kg／100m~2，施石灰可中和土壤酸性，pH平均升高0.13，使土壤有机质、有效P、K等增加，并使林下土壤微生物数量增多；在春季，细菌数量达到8.0×10~9个／Kg干土，固氮菌达2.5×10~7个／Kg干土，从而促进了林分生长。

By sulfating synthesized Zr-HMS zeolite, a SO〓/Zr-HMS was prepared. It is proved that it possess superacidity by the experimental results of indicator method, NH〓-TPD, TG and IR.

硫酸化处理后制得SO〓／Zr—HMS，指示剂法测定它的酸强度大于-13.75；NH〓—TPD，TG和IR表征也证明它具有超强酸性。

The method of acidothioureation leaching (with 732 resin) for the extraction of gold from ore Containing Sulfurs and concentrate of gold was Studied.

本文报导了在硫酸酸性介质中以Fe~(3+)离子为氧化剂，用硫脲浸出，732型离子交换树脂吸附回收含硫金精矿中金的方法。

I add a tarter cleaning solution to Mina and Cheska's water dish......

我加进一酸性溶液来清洗Mina 和 Cheska的水盘。。。

The effects of gastrodine on the expression of glial fibrillary acidic protein, the transuding amount of lactic dehydrogenase, and the activity of nitric oxide synthase in cultured astrocytes of young rats with lesions caused by simulated cerebral ischemia and reperfusion, were determined in this experiment.

观察天麻素对脑缺血再灌注损伤星形胶质细胞胶原纤维酸性蛋白表达、乳酸脱氢酶漏出量以及一氧化氮合成酶活性的影响。结果：天麻素大、小剂量组GFAP纤维样改变减轻，强阳性反应细胞数减少；LDH漏出量下降；NOS活性减弱。

The color change of veneers dyed by acid dyes is close to that by active dyes.

酸性染料和活性染料染色的单板材色变化幅度接近。

The process needs an alkaline wash of the treated gas to remove volatilized nitrogen oxides from the acidic peroxide solution.

这个过程需要一个经处理后的气体挥发碱性清洗，以消除从酸性双氧水氮氧化物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。