These changes have not been detected at the population level , but e - coli bacteria bugs adapted in lab experiments showed resistance when exposed to as much as 0 . 1 percent wt / vol triclosan soap 目前，这种改变（产生耐药性）还没有在细菌的群体水平得到证实，但是，当将实验室常用的大肠杆菌暴露在质量体积比为0 . 1的三氯森香皂环境中时，大肠杆菌产生了耐药性。
The company hopes to commercialize an inexpensive blood pressure measuring device developed by a cuhk research group over the past three years that continuously measures blood pressure electronically without the need for bulky , inflated cuffs 血压测量仪由中大另一研究小组在过去三年成功开发，体积比一般血压计更小巧，可以运用在手机、个人电子手帐和手表上。
Based on the theory of synthesis in inverse emulsion , five factors to influence the viscosity of product and the stability of the system were studied , such as the ratio of volume of oil to water , the type of emulsifiers , the type of initiators and the ratio and concentration of dac to am 讨论了引发剂种类、乳化剂种类、单体浓度及配比、油水体积比等因素对共聚产物的特性黏度和体系稳定性能的影响，确定了最佳反应条件。
This numerical simulation is a primary attempt to design material with computer simulating analysis . we can find the best combination by change parameters , such as aggregates " diameters , rate of aggregates volume and gradation , to finish the material design 这一数值模拟过程是材料设计计算机仿真的初步尝试，即通过改变模拟中的各种参数值，如骨料粒径、骨料体积比、级配等，就可以寻找出最优的配制，达到材料设计的目的。
Solvents of dmac and nmp were used to prepare polymer electrolyte membrane , when the ratio of dbp and solvent was 20 % , both of the ionic conductivity can arrive at 10 - 3 s ? cm - 1 , and the ionic conductivity of polymer made by nmp was 35 % higher than by dmac 分别用溶剂dmac及nmp制备了聚合物电解质膜,在增塑剂与溶剂体积比为20 %时,聚合物膜的离子电导率均能达到10 - 3s ? cm - 1 ,且以nmp为溶剂的聚合物膜的电导率比以dmac为溶剂的电导率高出大约35 % 。
The oxygen sensing properties of the membranes have been studied , the results indicate that the membranes with ru ( phen ) 3cl2 have better oxygen - sensitivity than those with ru ( bpy ) 3cl2 , and the membranes with the formamide content of 16 % ( v / v ) and ru ( phen ) 3cl2 content of 2 . 10g / l in the precursor mixture have the best structure and quality . the fiber optic gas oxygen sensor with this sensing membrane has a detection limit of 5ppm , a response time of less than 30s , excellent reproducibility and stability . ( 2 ) a new kind of organically modified oxygen - sensitive membrane based on fluorescence quenching was prepared by sol - gel method , using dds and teos as the mixed precursor , rufchenbcla as the indicator 实验证明：该类敏感膜的tan _ 0 tan值与氧气浓度存在良好的线性关系；包埋ru ( phen ) _ 3cl _ 2的凝胶膜的氧敏感性相对较好；当甲酰胺为16体积比含量， ru ( phen ) _ 3cl _ 2在前驱体中浓度为2 . 10g l时，制备的敏感膜结构和性能最佳；对气态氧检测时，该敏感膜的响应时间小于30秒，检测下限为5ppm ，具有较好的重复性和稳定性。
Considering the special structure of multi - ribbed slab , founding diphase body mechanical model of compound material , strengthening rib beam and rib pillar by equivalent volume ratio of concrete and slice brick , the paper drew elastic compution constant and shear constant . based on the things , the paper simplified isotropy compution model to wall , gave practical design formula of elastic mold and shear mold , provided necessary parameter for practical design formula of elastic rigidity . finally the calculating results agree well with the text results 结合密肋复合墙板的特殊构造，建立墙板的复合材料二相体力学模型，按照混凝土与砌块体积比不变原则对肋梁肋柱同时加强，得出墙板的弹性计算常数及剪切常数，在此基础上，进一步将墙板简化为各向同性的计算模型，给出墙板弹性模量及剪切模量实用计算公式，为密肋复合墙板的实用弹性刚度计算公式提供必要的参数。
Based the humidity theory , the paper adopts the relative humidity as the character value and puts forward using 30 % rh and below 0c dew - point as the on - line monitoring critical value . it gives the method of volume ratio convert at the different temperature . with the standard value , we can conclude the result of moisture content 针对现有规程标准中控制水分的指标的缺点和局限，提出了采用相对湿度作为监测特征量并转换为露点以直观表示设备绝缘状况：采用30相对湿度及0以下露点作为监测的临界值与允许值；同时推导出了体积比单位在不同温度下的折算方法，以结合现有标准，综合分析，做出判断结论。
Single - walled carbon nanotubes ( swnts ) were opened and oxidized in the concentrated h2so4 / hno3 mixture ( volume ratio : 3 : 1 ) , hydroxyl groups could be brought into the swnts after oxidation modification treatment , and the long - chain silane coupling agent was grafted onto swnts via hydroxyl - silanol route 摘要采用混酸体系（浓硫酸浓硝酸体积比为3 / 1 ）对单壁碳纳米管进行了氧化处理，并通过氧化处理后在单壁碳纳米管表面生成的羟基官能团与长链硅烷偶联剂进行反应，制备了表面有机修饰的单壁碳纳米管。
