查询词典 average density

In order to obtain the fire parameters of cable tunnels and study the time-dependent and spacedependent distribution of the air temperatures and fire smokes inside the tunnels, cable tunnel model is established and fullscale fire simulation is made by means of FDS developed by NIST (National Institute of Standards and Technology). The distribution pattern of the smoke density, oxygen density and temperature are obtained by means of processing and analysis of the experiment data, so as to provide some effective methods for fire-fighting, rescuing and escaping. Furthermore, some suggestion is made on fire prevention.

为了获取电缆隧道火灾参数，研究隧道内空气温度及火灾烟雾浓度随时间、空间的分布情况，利用NIST (美国国家标准和技术研究院)研发软件FDS，建立电缆隧道模型，进行全尺寸火灾模拟，通过实验数据处理和分析，给出了电缆隧道发生火灾时烟气浓度和氧气浓度以及纵向温度的变化规律，为现实火灾救援灭火、人员逃亡提供一些有效方法，并对火灾预防提出一些建议。

According to density of particle numbers and energy of perfect quantum gas ,by strict theoretical calculation ,the energy of non relativity and relativity about perfect quantum gas under high temperature and low density is given.

根据理想量子气体的粒子数和能量的密度，通过严格的理论推算，给出理想量子气体在高温低密度条件下非相对论和极端相对论能量；再由巨正则系综中能量和压强相对涨落的公式，采用合理的近似方法，给出巨正则系综能量和压强相对涨落的严格解，并将其与正则系综对比，完备地展示两种系综在强度量的涨落方面热力学的等价性和个性差

The results indicate that the cell only doped with Al2O3 (Cell 1) is of the worst output performance at 850 ℃, the output power density being 0. 083 W/cm^2, and that the cell doped with Al2O3 and coated with buffer layer (Cell 2) is of the best output performance at the same temperature, the output power density being 0.120W/cm^2. AC impedance spectroscopy analyses indicate that the interface resistance and Ohmic resistance of Cell 2 are obviously less than those of Cell 1, meaning that insulative nickel aluminum spine1 is generated by the reaction of Al2O3 and NiO during the sintering at a high temperature.

结果表明：850℃时，含Al2O3的电池输出性能最差，输出功率约为0.083 W/平方公分；含Al2O3并具有过渡层的电池输出性能最好，输出功率约为0.120 W/平方公分；交流阻抗谱分析表明，含Al2O3并具有过渡层的电池的欧姆电阻与界面电阻均比不含过渡层的明显减小，说明YSZ中添加的Al2O3在高温烧结过程中，与阳极材料NiO发生反应生成不导电的镍铝尖晶石。

Three-density region model, solvent density inhomogeneities and intermolecular interactions of probe pyrene in SC CO2 are also discussed.

文中同时讨论了3段密度区域模型(three-density regionmodel)、局域密度不均一性以及探针芘在超临界CO2中的分子间相互作用。

Density ; crystal structure ; chemical bonding properties ; density of Earth's materials ; the densities of planet and fixed star

密度；晶体结构；化学键性质；地球物质的密度；行星及恒星的密度

On condition that the critical temperature and critical density or critical specific volume are known, the density of saturated liquid can be calculated with high accuracy.

利用该方法在已知临界温度和临界比容或临界密度的条件下，可以对所有乙烷系氟里昂的饱和液体密度进行推算，该方法推算的平均偏差不超过1%，最大偏差不超过1.5%，可满足CFCs替代物研究和应用的需要。

The sharp rising process of the reflectivity was explained quantitatively well based on the model of Auger recombination of high density plasma and Auger-recombination-induced heating to lattice, which showed the heating effect induced by Auger recombination in high density plasma should be the main mechanism of ultra-short laser pulse-induced phase change.

利用高密度等离子体的Auger复合及其感应的晶格加热模型较好地定量解释了反射率从最小到最大的快速变化过程，表明高密度等离子体的Auger复合加热导致的热效应可能是超快激光诱导相变发生的主要机制。

On the basis of user requirements can be Timbuktu installed intelligent electronic structure, with arbitrary density and weft weft density compensation function.

可根据用户要求安装电子智能提布结构，具有任意设定纬密度和纬密度补偿功能。

Optimal mixing ratio of SRA as delay forming agent in cement treated base is 0.05%-0.06%; the influence of compacting delay on strength and dry density of road base may be reduced by SRA additive, forming time may be delayed to 9h; after the forming time is delayed to 4h, 6h and 9h, the strength and dry density shrinkage of cement-treated base with SRA admixture are much less than that of those without SRA.

SRA用作水泥稳定粒料路面基层的延迟成型剂的最佳掺量在0.05％～0.06％：用SRA可降低因延迟压实对水泥稳定粒料基层的强度和干密度的影响，可把延迟成型时间延长到9h；在成型延迟4h，6h，9h后，掺入SRA的水泥稳定粒料的强度和干容度损失明显小于未掺外加剂的混合料在相同延迟成型务件下的强度损失。

The maximum increase of electron temperature in ionospheric F region is in the vicinity of reflect point of radio waves, and the changes of electron density have increase and decrease. The time scale of balance of electron temperature is tens of second, which is shorter than that of electron density, that is 2～3 minutes, and heating time scale for electron is good symmetry with that of cooling.

电子温度达到平衡态的时间大约为几十秒，而电子密度达到平衡态的时间则较长，大约为2～3分钟的量级，电子温度的加热时标和冷却时标具有很好的对称性，而且热传导过程十分明显。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我