临界质量

The truck cast steel three big piece type bogie is easy to maintain. But since the grate weight under spring and the large operation strength during running, it is difficult for the bogie to keep the positive position. The critical speed of the snaking motion is low, which is inapplicable for high speed running. The other type of truck bogie is H type integrative truss. Its structure is complicate relatively, which is not easy to manufacture and maintain. But it can keep the positive position of the bogie preferably. And because it is adopted the structure of axle box one series elastic suspend, the weight under spring reduces. Which achieve the effective control to wheel sets and improve the running quality of the bogie distinctly.

货车铸钢三大件式转向架便于制造维修，但因其簧下质量大，在运行中轮轨作用力大，转向架难以保持正位，蛇行运动临界速度低，不适用于高速运行；货车转向架的另一种形式是"H"型构架一体式，结构较为复杂，不便于制造和检修，但它能够较好地保持转向架的正位，而且由于采用了轴箱一系弹性悬挂结构，降低了簧下质量，实现了对轮对的有效控制，明显地改善了转向架的运行品质。

According to the experimental data, it is found that the circumferential diffierence of heat transfer characteristics occurres due to the effects of thermal acceleration and buoyance in the inclined smooth tube at supercritical pressure.

实验结果表明：在超临界压力区域，倾斜光管内可能由于受到热加速度和浮力的综合作用，倾斜光管传热特性沿周向是不均匀分布状态，通常管内顶部的壁面温度比底部高，在大比热区发生传热恶化和传热强化的现象，低质量流速和高热负荷条件下会发生传热恶化现象，高质量流速下会发生传热强化，避免壁温发生飞升；内螺纹管内的传热特性在不同焓值区域表现不同，在远离拟临界焓值的低焓值区域和高焓值区域，呈现出相似的规律，而在接近拟临界焓值区域时，传热得到强化。

The effects of sodium laurylsulfonate and butanol on upper critical solution temperature s for water-phenol were studied by means of cloud point.

浊点法研究了十二烷基磺酸钠和正丁醇对水-苯酚系统上临界溶解温度的影响，结果发现在试验的浓度范围内，该系统的上临界溶解温度随十二烷基磺酸钠质量分数的增大而线性下降。

In this paper, the JFO condition, satisfied with global mass continuity, is incorporated into an universal Reynolds equation with micro-polar fluid which is solved for the oil film pressure using OSM and FEM. The bearing load capacity and friction resistance were given, and stiffness/damping coefficients and critical rotor mass were obtained by solving a pressure perturbation equation with micro-polar lubricants.

本文采用满足全流场质量连续的JFO边界条件，采用微极性流体的广义雷诺方程来求解油膜压力分布，进而获得油膜承载力和粘性阻力等轴承动力特性量；采用小参数摄动法得出油膜压强扰动方程，并采用有限元法解出扰动压强，积分扰动压强获得油膜的阻尼系数和刚度系数，进而求得了表示轴承油膜稳定性的临界转子质量。

The particle density criterion and the temperature criterion of instability for the imperfect Fermi gas with weakly attractive interaction are given, and the dependance of the critical density of particles on the temperature...

给出了不稳定性的粒子数密度判据和温度判据，就不同逸度情况下临界粒子数密度的具体表达结果以及温度、粒子质量和吸引相互作用对临界粒子数密度的影响进行了讨论。

Have introduced its systematic structure and operation principle in the system of loading of the inertia, and the vibration question that should be paid attention to while designing a group of rotator inertial mass, describe a critical rotational speed of group of rotator inertial mass in detail, influence the factor of a critical rotational speed of group of rotator inertial mass, and rotate a critical rotational speed computing technology and rotation of group and a balance question of group of inertial mass of inertial mass , and confirmed a design of group of rotator inertia quality finally.

在惯量加载系统中介绍了其系统结构和工作原理，以及在设计旋转惯性质量盘组时应注意的振动问题，详细地论述了旋转惯性质量盘组的临界转速，影响旋转惯性质量盘组的临界转速的因素，以及旋转惯性质量盘组的临界转速的计算方法和旋转惯性质量盘组的平衡问题，并最后确定了旋转惯量质量盘组的设计。

According to the state standard of ocean sediment quality, threshold effective level and state standard of soil quality, the total contents of heavy metals in sediments from infall port were higher than those from the other parts of the lake which showed a combined pollution, the main pollutants being Cu, Cd, Ni and Zn.

根据国家海洋沉积物质量一类标准、生态危害临界值和国家土壤质量一级标准，湖泊进水口底泥中重金属的复合污染较严重，其它区域沉积物中的重金属全量也有不同程度的超标现象，底泥中污染重金属主要为Cu、Cd、Ni、Zn。

Firstly, based on the acidity balance equation in ecosystem, together with the steady state mass balance equations of sulphur and nitrogen, formulae for calculating critical loads of not only acidity and sulphur, but also acidifying nitrogen and nutrient nitrogen were educed.

基于原有的生态系统酸度平衡关系，并结合临界状态下硫和氮的稳态质量平衡，推导出计算酸度、硫、酸化氮和营养氮临界负荷的公式。

Firstly, based on the analysis of viscosity data, combined with other methods, a new method is proposed to calculate the viscosity of saturated vapor of halides. The calculation can be done on condition that the critical temperature, critical pressure, critical specific volume, molecular weight and the eccentric factor are known.

在理论研究上，一方面对于卤代烃的饱和蒸气粘度进行了研究分析，并结合其他理论推算方法的优点，提出了一种推算卤代烃的饱和蒸气粘度的新方法，该方法在已知临界温度、临界压力、临界比容、分子质量、偏心因子的情况下，便可以计算在有效对比温度范围内的饱和蒸气的粘度，本方法的适用范围是对比温度T〓在0.5-0.95之间，其对饱和蒸气粘度推算的平均偏差不超过5％。

An everyday example of Ostwald ripening is the recrystallization of water within ice cream which gives old ice cream a gritty, crunchy texture.

Ostwald发生的过程包括小于一个临界尺寸的粒子的溶解，然后质量转移到大于这个临界尺寸的粒子上。

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。。。。