The waves eat into them only when they are charged with sand or pebbles. The two-phase flow theory about dust storm's vertical transport, part ⅱ: The air column entrainment model 只有挟带沙砾和碎石的波浪,才起侵蚀作用。沙尘暴垂直输运的两相流理论Ⅱ:气柱挟卷模式
The two-phase flow theory about dust storm's vertical transport, part ⅱ: The air column entrainment model 沙尘暴垂直输运的两相流理论Ⅱ:气柱挟卷模式
In wind instruments the sound is produced by a vibrating air column. 管乐器的声音是由振动的气柱产生的。
The results show that there exist the considerably regional, seasonal, yearly and interdecadal changes of the air column PW over the QXPS. 结果表明,高原及周围地区的气柱可降水量有明显的地区及季节变化。
Device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone. 黄铜的管乐器中改变空气柱的长度来变化音调的装置。
With the index of cut hole's volume, depth and blasting fragmentation in the thesis, the simulated tests have been carried out upon cut blasting of bottom air column and conventional charge. 以槽腔体积、槽腔深度和爆破块度为指标,对底部空气柱装药和常规装药掏槽爆破进行了模拟试验。
Research on cut blasting experiment of bottom air column charge and its mechanism 底部空气柱装药掏槽爆破试验及机理研究
The paper also sets up a new concept of bottom air column effect and discusses the action mechanism of bottom air column effect. 文中提出了底部空气柱效应新概念,探讨了底部空气柱效应的作用机理。
The mathematical model of a simple pipe system is established by means of the transfer matrix method, its air column natural frequencies are calculated and verified in the experiments. 用传递矩阵法建立一简单管系的数学模型,计算其气柱固有频率,并进行实验予以验证。
Then, the model was used to investigate the effects of air column flow on the natural frequency of the riser. 然后,利用该模型研究管内气柱流对固有频率的影响。
There is larger turbulent kinetic energy in the internal swirl area near the air column under the end of the overflow tube in the hydrocyclone; 旋流器内湍动能较大的区域是溢流管端以下空气柱附近的内旋流区域;
The micro physical structure of deep convection of developing air column shows that the heavy convective cloud in Fuyuan includes not only warm cloud which is composed of cloud water and rain water, but also mixted phase cloud which is composed of snow and ice in high troposphere. 深对流气柱内云团发展的微物理结构显示,造成富源大暴雨的强对流云不是只含有云水和雨水的暖云云体,在对流层高层有含有雪和冰的混合相云体。
The Formulae, Calculation and Discussion of Cumulus Parameters in the Model of Air Column 气柱模式中积云参量的解公式、计算和讨论
The blasting effect of bottom air column charge is studied through a series of crater tests on cement mortar models. The law that the blasting effect varies with the length of bottom air column is analysed. 本文通过水泥砂浆模型上的一系列爆破漏斗试验,研究底部空气柱装药的爆破效果,分析了底部空气柱长度变化对爆破作用的影响规律。
Discussion about the air column length in closed end of the inverted U-tube 对U型管倒置过程中封闭气柱长度的论述
In this paper, we have in detail computed the budgets of radiation and heat of whole air column over the tropical and its surrounding sea areas of the west? 本文利用1986年10&12月西太平洋的考察资料和世界月平均气候资料详细地计算了西太平洋、太平洋中部热带及其邻近地区整层气柱的辐射和热量收支。
On the influence of the branch pipe in the pipe system upon the air column natural frequencies 论管系中支管参数对气柱固有频率的影响
On CT scan, interrupted trachea-bronchial air column and displaced or angulated bronchus were displayed. CT检查可补充X线平片的不足,可显示气管支气管柱中断,气管移位或成角畸形。
Abstract This paper carries out the study of liquid vibration in pipe line by transfer matrix method on the basis of the study of vibration in air column. 在对气柱振动研究的基础上,将传递矩阵法引入管系液体振动研究。
The results show that when an air column flow occurs, the natural frequency of the riser changes with the movement of the air column. 计算结果表明:立管内出现气柱流时,固有频率随气柱位置的不同而明显变化。
The pumping at steady cumulus base and haltiner's air column model 定常积云的云底抽吸与Haltiner气柱模式
Then the feasible mathematical model is simulated on the computer, and the influence of the branch pipe parameters upon the air column natural frequencies of the pipe system is analyzed. 然后由计算机仿真此可行的数学模型,分析支管参数对管系气柱固有频率的影响。
Theoretical calculation of air column length of charge structure for smooth blasting 光面爆破装药结构空气柱长度理论计算
The vertical saturated warm moist air column, southerly low layer jet and westerly middle level jet ahead of the front show highly organized features at the intense front segment. 强锋段的锋前饱和高湿高能气柱、锋前中低层急流状南风区和中层西风均匀大值区等要素场呈现高度组织化的特征。
Due to effect of the return flow, a negative pressure zone forms in the middle of the cyclone and the air column whose sectional diameter is about 0.6 times of the diameter of the overflow outlet occurs here. 由于回流的作用,在旋流器中间造成负压区形成了空气柱,空气柱截面直径大约为溢流口直径的0.6倍。
He blasting mechanism of bottom air column charge is analysed with shock wave theory and its blasting effect is investigated through a series of crater tests on the cement mortar models. 应用激波理论分析了底部空气柱装药爆破机理。
The law that the volume of crater varies with the length of bottom air column is obtained when the charge is located at a fixed depth in borehole. Valuable reference is offered for the engineering. 通过实验室的爆破漏斗试验,研究了底部空气柱装药爆破效果,掌握了定量装药在固定装药深度情况下爆破漏斗体积与底部空气柱长度的变化规律,对工程实践有一定指导意义。
In 8-13 μ m atmosphere infrared window, the atmosphere transmissivity(τ_o) is dependent upon the total moisture content of atmosphere air column ( W). 在8~13μm大气红外窗区,大气透过率τ(?)主要取决于大气气柱水汽总含量W。
Precipitable water is the sum of the water vapor in an air column. It is the depth of liquid water if all the vapor condensates on the base of the air column. 大气可降水量是指垂直气柱中含有的水汽总量,假定这些水汽全部凝结,并积聚在气柱的底面上时所具有的液态水深度。