- 更多网络例句与测定体积的相关的网络例句 [注:此内容来源于网络,仅供参考]
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The basic principle, advantage, disadvantage and the improvement for measuring liquid surface tension with different methods were described. The methods were capillary rise method, Wilhelmy plate method, pendent drop method, drop volume method, maximum bubble pressure method. The problems in the surface tension measurement of wide temperature and pressure range, the chosen of experimental methods and the development tendency of these were introduced especially in this paper.
本文着重介绍了几种液体表面张力的测定方法(包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法),包括这几种方法的测定原理、优缺点及改进方法,特别指出了宽温度和压力范围的表面张力测定存在的问题,实验方法的选择及表面张力测定方法的发展趋势。
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The basic principle,advantage,disadvantage and the improvement for measuring liquid surface tension with different methods were described.The methods were capillary rise method,Wilhelmy plate method,pendent drop method,drop volume method,maximum bubble pressure method.The problems in the surface tension measurement of wide temperature and pressure range,the chos...
本文着重介绍了几种液体表面张力的测定方法(包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法),包括这几种方法的测定原理、优缺点及改进方法,特别指出了宽温度和压力范围的表面张力测定存在的问题,实验方法的选择及表面张力测定方法的发展趋势。
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In inorganic chemistry experiment teaching material,"the Measurement of the Molar Gas Constant by Displacement method" uses the magnesium method of substitution or the aluminum method of substitution.
摩尔气体常数的测定方法很多,在无机化学实验中,常采用置换法来测定。其方法为:取一定质量的活泼金属,与一定体积的已知浓度的酸反应,在一定的温度和压强下,测得置换出氢气的体积。
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In this part, the densities of sodium benzoate, sodium nitrobenzoate, sodium chlorobenzoate and sodium methylbenzoate in DMFwater mixed solvents have been measured at 298.15K with an Anton Paar Model 55 densimeter. From these densities, apparent molar volumes and partial molar volumes have been calculated, transfer volumes from water to DMF-water mixtures and substituent contributions to the transfer volumes have also been obtained. Solvent and substituent effects are discussed in detail. The Scaled Partical Theory has been applied to the ternary solutions to evaluate the partial molar volumes of cavity formation and the volumes change associated with solute-solvent interaction.
选择了含有取代基团的芳香类有机电解质,主要是苯甲酸钠、硝基苯甲酸钠、氯苯甲酸钠和甲基苯甲酸钠的邻、间、对同分异构体作为研究对象,用DMA 55型振荡管密度计测定了它们在不同质量百分数组成的DMF-水混合溶剂中的密度,利用这些密度数据,计算了表观摩尔体积和偏摩尔体积,得到了这些单取代苯甲酸钠从水到DMF-水混合溶剂中的迁移偏摩尔体积及苯环上不同位置的取代基对迁移偏摩尔体积的贡献值,讨论了溶剂效应和取代基效应,并将定标粒子理论应用于此三元电解质溶液中。
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This warehouse is ultra-secured and is under surveillance 24/7, equipped with a perimetric and volumetric detection alarm system.
在一星期7日每日24小时内均受到监控,而且设置有一个周长和测定体积的警报系统。
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The eluents were water, 10%, 20 %, 30 % and 50 % ethanol respectively and they flowed through the macroporous resin one by one with five times of the column volume. The obtained eluent of 50 % ethanol was evaporated and the content of total flavonoids was 76 % measured by HPLC.
结果 选择AB-8大孔树脂;最佳纯化工艺为上样液总黄酮质量浓度 60 mg·L-1,pH 5.0,温度 25 ℃;最佳洗脱方式是用5倍柱体积的水及体积分数分别为10 %、20 %、30 %的乙醇依次洗脱,弃去洗脱液后再用5倍柱体积的体积分数为50 %的乙醇洗脱;HPLC法测定总黄酮的含量为76 %。
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The gas-oil ratio is ordinarily the ratio of volume, in standard cubic feet, of gas from the separator to the volume of stock-tank oil both measured over the same time interval.
油气比通常是指原于分离气的气体体积与地面脱气原油体积的比率,二者在等时间隔测定。
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Methods The ionization constant was determined with acid-basle titration in acetone/water solutions with different ratios, the pH at half neutralization point was regarded as pKa, the value to infinite diluted in pure water was explored and the lgP was determined with bottle-shaking method by HPLC.
方法采用酸碱滴定法测定各不同体积比的丙酮-水溶液中药物半中和点时的pH值作为药物在该体积比的丙酮-水溶液中的pKa值,再外推至纯水中药物浓度无限稀释时的pKa值;采用HPLC配合摇瓶法测定药物的分配系数。
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The bulk modulus describes volumetric elasticity, or the tendency of an object's volume to deform when under pressure; it is defined as volumetric stress over volumetric strain, and is the inverse of compressibility.
体积模量,描述了测定体积的弹性,或者说一个物料在压力作用下的体积相对于变形的程度;它被定义为体积应应变下的体积应力,且是体积柔量的倒数。
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Densities of glycine in glucose-water and sucrose-water mixed solvents have been measured to 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes and number of hydration of glycine have been calculated. The transfer volumes from water to sugar-water mixtures have been obtained and discussed in terms of the structural hydration interaction model.
利用精密数字密度计测定了甘氨酸与不同组成葡萄糖-水、蔗糖、水混合溶剂构成的三元系溶液的密度,计算了甘氨酸的表观摩尔体积、极限偏摩尔体积和理论水化数,根据结构水合作用模型讨论了迁移偏摩尔体积的变化规律,并与乙二醇-水和丙三醇-水等多羟基体系作了比较。
- 更多网络解释与测定体积的相关的网络解释 [注:此内容来源于网络,仅供参考]
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bomb calorimeter:弹式热量计
食物能值通常用氧弹量热计,或称弹式热量计(bomb calorimeter)进行测定,这是一个弹式密闭的高压容器,内有一白金坩埚,其中放入待测的食物试样,并充以高压氧,使其置于已知温度和体积的水浴中.
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central nervous system:中枢神经系统
(一)中枢神经系统(central nervous system)由脑和脊髓共同组成,并分别包藏在 软骨或硬骨质的脑颅及椎骨的髓弓内. 1.脑 由端脑,间脑,中脑,小脑,延脑等五部分组成,结构比较简单,脑的体积也比 其他脊椎动物小得多.据测定,鳗鲡的脑仅占体重的 0.005%,
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refractometer:折射计
2.折射计(refractometer)法有座式临床折射计法和手提式折射计法. 利用光线折射率与溶液中总固体量相关性进行测定. 3.尿比重计(urinometer)法用特制的比重计测定4℃时,尿液与同体积纯水的重量(密度)之比.
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sediment:沉淀物
水份(Water Content)与沉淀物(Sediment)可分别测定,亦可藉离心法测得一定量试样中所含有水与沉淀物总量,单位:体积%,但后一测定(尤其是含蜡量较高石油的测定)宜在加热条件下进行,否则一部份蜡亦被作为沉淀而令测定结果偏高.
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mass spectroscopy:质谱法
旁流型的优点是其体积相对较大的加热、测定装置可远离患者,缺点是如果持续抽吸采样的气流速度超过排气的速度则可能发生测量误差. EtCO2的测定通常采用红外线吸收原理,其它方法包括质谱法(mass spectroscopy)、拉曼散射分析(Raman scatter analysis))等.
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supply:电源
SORPTOMATIC-1900型吸附仪系意大利卡劳尔巴(CARLO ERBA)仪器公司出品,采用经典的静态氮吸附法测定样品的比表面积、孔体积及孔径分布. 接通电源,将机体背后的电源(SUPPLY)及机械泵(PUMP)的开关打向ON的方向.
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turbidimetry:比浊法
透射比浊法(turbidimetry)的基本原理是测定一定体积的溶液通过的光线量(光通量),当光线通过时,由于溶液中存在抗原一抗体复合物粒子对光线的反射和吸收,引起透射光的减少,测定的光通量和抗原抗体复合物的量成反比.
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urinometer:尿比重计
3.尿比重计(urinometer)法用特制的比重计测定4℃时,尿液与同体积纯水的重量(密度)之比. 4.超声波(ultrasound wave)法 利用声波在不同特性物质中传播速度与密度关系的性质,通过测定声波的偏移来计算比重.
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volumetric:测定体积的
volumeter 体积计 | volumetric 测定体积的 | voluminous 很多的
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bulk milk sediment tester:收集乳沉淀物测定仪 牛乳在导乳管道或贮槽中的沉淀物测定仪
bulk milk collection || (用槽车)收集牛乳 | bulk milk sediment tester || 收集乳沉淀物测定仪 牛乳在导乳管道或贮槽中的沉淀物测定仪 | bulk modulus of elasticity || 体积弹性模量