采用密度计的

The research uses wei- mixing system of ceramic raw material s together with the aid of computer,γ-ray densimeter and electromagnetic floweter to.

本研究采用以计算机、γ射线密度计及电磁流量计为核心的陶瓷原料湿法掺和系统、实现了对高岭土、瓷石精矿进行自动配料，并获得了质量稳定的标准化陶瓷单一原料。

When the volume of liquefied petroleum gas is measured with a volumetric flowmeter and the relative density is measured manually with a pressure densimeter,the mass cannot be calculated in accordance with the existing standard for mass calculation.

当液化石油气体积采用容积式流量计测量，相对密度采用压力密度计手工测量的计量方式时，依据现有的质量计算标准，其质量无法进行计算。

According to Principle of quiescent sedimentation granula analysis, the densimeter method and the piette method are used to get the size grading of fine-grain soil and the errors of two methods are analyzed.

根据静水沉降颗粒分析法计算公式原理，分别采用了常用的密度计法和移液管法求取细颗粒土的粒径级配，分析了两种方法试验误差产生的原因，并证明密度计法较移液管法具有更简便、准确、节能的特点，建议尽量采用密度计法。

The research uses wei- mix ing system of ceramic raw materials together with the aid of computer,γ-ray densimeter and electromagnetic floweter to.

本研究采用以计算机、γ射线密度计及电磁流量计为核心的陶瓷原料湿法掺和系统、实现了对高岭土、瓷石精矿进行自动配料，并获得了质量稳定的标准化陶瓷单一原料。

In this paper, for the first time, introducing Gemini surfactant to application of oil field. Adoptting method different from ordinary method which evaluatesthe fracturing fluids" capacity of suspending proppant--recur to densimeter toquantificationally test the viscoelastic surfactants fracturing fluids" capacity of suspension.

本文首次将双子表面活性剂引入油田应用中，并采用了不同于常规评价悬浮性能的方法—借用液体密度计对压裂液配方的悬浮性进行定量测试。

The measurements were performed simultaneously by using a vibrating-wire instrument operating in the forced mode of oscillation.

采用振动弦黏度/密度计对碳酸二乙酯的黏度与密度进行了实验研究，测量的温度范围为263～363 K，压力范围为0.1～20 MPa。

In order to decrease statistical error, longermeasuring time should be adop ted by radiation ore pulp density gauge to perform measurement.

为减少统计误差，要求密度计在测量中采用较长的测量时间。

The use of the formula for calculating the grain diameter indensimeter method prescribed in "Standard for soil test method" GB/T 50123—1999 is limited to the small global grains with low velocity in a layer flow considering only the viscous resistance and effective gravity.

GB/T50123—1999《土工试验方法标准》中采用密度计法进行颗粒分析时，土粒粒径计算公式是在层流条件下，对低速运动的微小球形颗粒仅考虑介质粘性阻力和有效重力条件下导出的。

Densities and viscosities of the binary mixture of ethyl crotonate with ethanol at different compositions were determined at the temperature range from 293.15K to 343.15K and under atmospheric pressure by using a vibrating U-shaped tube densimeter and Ubbelohde suspended-level viscometer.

在常压下采用U形振动管密度计测定了巴豆酸乙酯与乙醇的混合液在293.15~343.15K下的密度。

①Rat MSC and VSMC were cultured and identified, respectively. MSC were labeled with DAPI firstly, and then co-cultivated with VSMC. The changes of morphology and ultrastructure of co-cultured cells were observed. Immunfluorescence analysis was performed by using monoclonal antibodies against specific antigen.②We established the regulatable system in two steps: a stable MSC line expressing rtTA has been constructed and characterized firstly by transfected with pUHD 17-1hyg and then selected by hygromycin B; in a second step, this line was used for trandfer the AT2R gene to MSC to get the well establishing double stable MSC lines;③The expression of AT2R regulated by doxycycline was evaluated by western blot;④The MSCs were transduced into rat carotid arteries with regulatable AT2R gene after the establishment of rat carotid balloon injury restenosis model. The intimal/medial area ratio were measured by digital analysis system.

研究方法：(1)密度梯度离心法及胶原酶消化法分别培养原代大鼠MSC及VSMC，细胞共培养并行免疫荧光化学染色和透射电镜观察超微结构；(2)组成受Dox调控的哺乳动物表达系统的四种成分的转化、扩增及提纯并酶切鉴定；(3)采用常规分子生物学方法连续两个回合转染体外培养的MSC，并分别采用发光计检测不同细胞克隆萤光素酶活性改变以及RT-PCR方法检测AT2R目的基因mRNA表达情况，根据各个细胞克隆受Dox调控表达的程度，选择低背景、高诱导表达AT2R的细胞系，作为双重稳定MSC细胞系；蛋白免疫印迹法观察该细胞系在Dox调控下AT2R表达的时相性、持续性及在不同浓度Dox调控下的表达情况；(4)建立大鼠颈动脉球囊损伤动物模型，将双重稳定MSC在术中导入血管，分别于14 d、28 d进行病理切片，检测可调控AT2R对新生内膜增生的影响；采用RT-PCR免疫组织化学免疫荧光等技术观察AT2R基因在新生内膜中的表达以及细胞外基质成分表达的改变，TUNEL法检测血管组织中细胞凋亡的变化情况。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。