查询词典 volume density

At present the main problem that the power electronic integration technology is faced with is how to make volume of module smaller, cheaper and more density of power, better capability of cooling, less parasitical parameter and applied in more situations.

目前混合封装电力电子集成技术面临的主要问题是如何将模块的体积做的更小，成本更低，功率密度更大，传热性能更好，寄生参数更小及满足更多的应用场合，而其中最主要的一个问题就是集成模块的散热问题。

Three parameters were considered in this new model,i.e, the average rate of fluid through every crack,the number density of cracks in per unit volume and the extent of cracks＇ penetrance.

笔者在此基础上建立起一个新的渗流模型，着重考虑了3个因素，即：流体通过每一裂隙面的平均流量；单位体积内裂隙的数密度；裂隙贯通程度。

Main finding is that the effect of water on structure and properties of the epoxy polymer is non-monotonic: on one hand, more water can lead to the plasticization of the polymeric network, that is, decreased density, increased fractional free volume, accelerated local chains; on the other hand, less water can lead to the contrast trends of the said above properties, that is, antiplasticization.

该模拟的主要发现是水对该聚合物网络的影响是非单调的：较多的水分可能导致聚合物网络的塑化，如系统的密度降低、自由体积分率增加、局部链运动加快；但是当吸收较少的水分时，这些性质可能得到一定的增强。

Density is measured using a know-volume device such as a pycnometer or weight-per-gallon (mass-per-gallon ) cup.

密度可以通过知道体积的比重瓶可每加仑的重量杯来测量。

Using this model system, development of quadratic mean diameter, mean height, the number of surviving trees per hectare, stand basal area, and stand volume can be simulated for various levels of initial density and site.

采用该模型系统即可以模拟落叶松人工林不同林分条件下的林分平均胸径，平均树高，每公顷株数，林分断面积和林分蓄积量的生长过程。

Through the trial regression to the ratio of unit injection well control area,unit well control area and injection-production well number ratio and shirr formula and unit injection well volume rate of change increasing with unit injection well control area decreasing,then Waterflooding reservoir macroscopica well spacing density formula c.

油藏工程理论及现场实践均表明，注水开发低渗油藏其注水方式和注采井数比对注水波及体积及水驱采收率有较大影响，通过对注水井水驱控制面积、单井控制面积与注采井数比进行了试探性回归分析，再结合谢尔卡乔夫公式，推导出了水驱采收率、驱油效率、井网指数、注采井数比与井网密度的关系式，从而建立了水驱油藏宏观井网密度公式。

These physicochemical data of above experiments, such as bulking density, specific surface area and pore volume are determined.

实验完成后，对这几种干燥实验的样品，分别进行了主要物化性能，如堆积密度，比表面积和孔容积的测定。

Then the samples obtained were determined by bulk density, specific surface area, pore volume, particle size and TEM.

制备的纳米二氧化硅样品进行了堆积密度、比表面积、孔容积和粒度以及TEM的测定。

The thermodynamic properties include temperature, pressure, density, enthalpy, entropy, specific volume and boiling latent heat.

建立了包括湿空气、R22、R21、R12、R11、R134a、NH3、H2O的热力性质计算数据库系统，其中热力性质计算包括温度、压力、密度、比焓、比熵、比容、汽化潜热。

In experiments, performances of the chamber density, the cooling speed of cold trap, and the efficiency of heat exchanger are all better than the contrast machine, so do the results of drying volume of the experimental machine, water capture of cold trap, drying efficiency, and electricity consumption in drying experiments of water.

在实验中发现腔体的气密度、蒸发吸附盘管降温速率及热交换器的效率皆比市面上对照机台佳，且在水的乾燥实验中，实验机台的抽水量、蒸发吸附盘管捕水量、抽水效率及耗电量皆优於对照机台。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。