浓度测定

Critical temperatures of lyotropic liquid crystalline formed in cellulose diacetate/trifluoroacetic acid and CDA/dichloroacetic acid solutions of different concentration were determined respectively using DSC technique.

用DSC技术分别测定了二醋酸纤维素在不同浓度的三氟醋酸和二氯醋酸溶液中形成的溶致液晶的临界温度，并绘制了相图。

Pharmaceutical characteristics of dimethylamino ethyl(4-chlorophenylmethfoxy )acetate hydrochloridein rabbit was studied and several parameters at different timeand way of medicine administration were determined.

研究了4－氯代苯甲氧基乙酸二甲氨基乙酯盐酸盐在家兔体内的药代动力学，测定了不同时间不同给药方式家兔体内的血药浓度及动力学参数。

Methods 151 cars used for different periods of time were selected and the concentrations of formaldehyde,benzene,toluene,dimethylbenzene and TVOC were detected.

方法选择使用不同年限的151辆小汽车，分别测定车厢空气中甲醛、苯、甲苯、二甲苯、TVOC的浓度，同时对驾驶人员的不良反应进行调查。

Methods The levels of formaldehyde, benzene, toluene and dimethylbenzene indoors at different time after decoration were determined with methods described in GB11737 and the dwellers' adverse reaction with a given questionnaire was surveyed????

选择装饰竣工后不同时期的居室，分别测定室内空气中甲醛、苯、甲苯、二甲苯的浓度，同时对居留者的不良反应进行调查。

METHODS:In vitro,by means of traditional method to compare the enhancement effect of dipentene with azone at difference concentrations in the transdermal absorption of tinidazole.

通过离体小鼠皮肤渗透释药实验，测定含不同浓度双戊烯和氮酮对替硝唑溶液促透效果。

Results the average recoveries of dipotassium glycyrrhizinate eye drops with high, medium and low concentrations were 100.32 %, 100.18 % and 100.12 ％ with rsd of 0.38 ％, 0.31 % and 0.34 %, respectively.

结果含量测定的高、中、低浓度平均回收率分别为100.32 %，100.18 %和100.12 ％，rsd分别为0.38 ％，0.31 %和0.34 %；加速6个月和长期放置24个月质量稳定；对兔眼无明显刺激作用。

The inclusion constants was investgated by means of Hildebrand-Benesi double-reciprocal plot which based on the fact that the excitation and emission peak position of Brilliant cresy blue kept unchanged but the emission strength increased disciplinarily with the increasing of β-cyclodextrin concentration.

利用灿烂甲酚蓝的荧光强度随β-环糊精浓度的增加呈现规律性的增加，而最大吸收波长及发射波长不变的性质，用Hildebrand-Benesi法测定了β-环糊精与灿烂甲酚蓝包合物的生成常数，确定包合比，并预测了包合物的可能结构。

This paper mainly studied the synthesis and characterization of some dissymmetric bis-quaternary ammonium gemini surfactants, then determined the surface tensions of their water solutions, finally calculated their critical micelle concentrations and build a surface tension-concentration model.

本文主要研究了非对称型季铵盐双子表面活性剂的合成与表征，测定了其水溶液的表面张力，并计算出其临界胶束浓度。

The uncertainty of ozone concentration in air measured by indigo disulphonate spectrophotometry was assessed.

对靛蓝二磺酸钠分光光度法测定某工作场所空气中臭氧浓度的不确定度进行了评定。

Methods The study population consisted of 180 pairs of twin girls aged 6 to 18 of whom.132 pairs monozygotic twins and 48 pairs dizygotic twins,who were all from Qingdao city of Shandong province.

以学校登记为基础募集6～18岁女性双生子180对，其中同卵双生子132对，异卵双生子48对，按Tanner标准进行青春发育分期，放免法测定空腹血清雌二醇(E2)和睾酮浓度。

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！