密度瓶

关于平底球形密度瓶质量可靠性分析

Reliability Analysis of Flat-bottomed Spherical Density Bottle Quality

利用密度瓶和玻璃毛细管粘度计，本文对293~353K温度范围内的碳酸二甲酯与柴油混合物的密度与粘度进行了实验研究，得到了不同配比下碳酸二甲酯与柴油混合物的密度与粘度实验数据。

The densities and viscosities of the binary liquid mixtures of dimethyl carbonate and diesel fuel are measured with a calibrated pycnometer and Ubbelohde-type capillary viscometer , respectively .

应用产品质量可靠性分析方法对目前实验室常用的平底球形密度瓶存在故障及影响因素进行了分析。

The fault and influence factors existing on the flat-bottomed spherical density bottles used in the lab have been analyzed by using the analysis method of product quality reliability .

针对模型土壤中夹杂着大量粒径较粗的泥沙颗粒的试验，提出进行泥沙粗细分层，然后采用烘干法和密度瓶法相结合的方法来测量次降雨侵蚀产沙量。

It puts forward to differentiate the coarse and fine sand and then measure the sediment yield of total precipitation erosion by using the combined method of drying and pycnometer in the light of the soil mixed with large quantity of coarser sand in the model tests .

使用POLYFLOW软件对PET瓶成型过程中的拉伸吹塑阶段和冷却固化阶段进行了仿真，分析了工艺条件、瓶坯结构类型、网格密度等对成型瓶厚度分布的影响。

Its analysis were about influences on bottle thickness distribution of process conditions , preform structure type and mesh grid , etc. Of that , the analysis on cooling process started with the stretch .

GB/T6523-1986氧化铝粉末有效密度的测定比重瓶法

Aluminium oxide powders Determination of effective density pycnometer method

近年新出现的气体燃料加热器虽然清洁、环保，但燃料能量密度小，储气瓶占用空间较大，只适合在燃气汽车上安装，使用时会影响整车续驶里程等性能。

Although the late CNG fired heaters have a good exhaust emission level , yet the CNG energy density is less than oil and the gas tanks hold big room of the vehicle , so they are only installed on NGV and may affect the vehicle operating range .

幼虫密度对草地螟个体发育也有显著影响，密度20头/瓶时幼虫和蛹的发育历期显著最短，其他密度的幼虫和蛹历期随着幼虫密度的增加而显著延长。

The larval development was also significantly affected by density . The development time of larvae and pupae at the density of 20 larvae jar was shortest , while it significantly prolonged with the larval density increasing .