水被视作无旋、无粘性理想流体。
The water is idealized and assumed to be irrotational and non-viscous.
其中有六类是无旋的。
对应于可变有源无旋电场的位移电流不激发磁场。
The displacement current corresponding to a variable irrotational electric field does not excite any magnetic field.
在声场中真正传递声能量者仅是有功声强中的无旋分量。
It is shown that it is the irrotational component of the active intensity that transfers sound energy in sound field.
研究了无旋、无粘、可压缩流体中多层圆柱壳的自由振动问题。
The free vibration of a multi layered cylindrical shell submerged in an irrotational, inviscid and compressible fluid is studied.
不旋转阀杆采用无旋流阀瓣，确保减少扭矩，防止填料受到扭转损坏。
Non rotating stem allows a non-spinning disc, ensures low torque and prevents torsional damage of the packing.
水模型实验结果表明，与无旋流情况相比，施加旋流后循环流量显著增大。
The water model experiments show that the circulation flow rate with swirling flow increases significantly.
我们通常所说的电容器中的位移电流就是对应于可变有源无旋电场的位移电流。
The displacement currents in capacitors, which are of common speaking, correspond to the irrotational electric field.
有功声强的无旋分量与表面声强有关，因此测量表面声强可避免有旋性的影响。
Because the irrotational component of the active intensity depends on the surface sound intensity, measuring the surface sound intensity can avoid the effect of the rotation.
理论分析与形成有限元公式所作的基本假设是罐内液体为理想流体以及它的流动是无旋的。
The theoretical analysis and the finite element formulation are based on the assumption that liquid in the tank is an ideal fluid and the liquid flow in the tank is irrotational.
将改写后的无旋条件与连续方程联立求解，可在计算面上将叶型设计问题用标准拉普拉斯方程来表示。
The equations of continuity and quasi irrotationality are transformed into the potential stream function coordinates. Then a Laplace equation can be deduced for an aerodynamic parameter "q".
文章研究的是解析函数的等价命题和解析函数及其柯西—黎曼方程在解决物理学中平面场的无源无旋问题中的应用。
This paper discusses several equivalent propositions in analytic function and their application to the nonsource and irrotation problems of plane field in physics.
本文应用复声强的概念，讨论了复声强的实部即有功声强的有旋性质。指出：在声场中真正传递声能量者仅是有功声强中的无旋分量。
Using the concept of complex sound intensity, we discuss in this paper the rotational character of the active intensity which is the real part of the complex sound intensity.
在著陆之前，尾旋翼必须停止转动。（无安装熄火降落组）
The tail blades must stop before the helicopter touches the ground.
他从容地划着，对他说来并不吃力，因为他保持在自己的最高速度以内，而且除了偶尔水流打个旋儿以外，海面是平坦无浪的。
He was rowing steadily and it was no effort for him since he kept well within his speed and the surface of the ocean was flat except for the occasional swirls of the current.
在相复励旋硅式无刷同步励磁电机中，如果在正常运行过程中出现硅整流管开路或短路的故障，必将危及到发电机组的运行。
In the rotating-diode phase compound excitation Brushless synchronous machine, if one diode appears fault, such as opening or shorting during the normal operating, it will do harm to the generator.
最近十几年来，银河系已被确认为是一个棒旋星系，而不是无棒结构的普通旋涡星系。
Therefore, our Milky Way should be morphologically catalogued as a barred spiral galaxy instead of a normal spiral one.
作为多旋翼微直升机的驱动器，微型无刷直流电动机具有结构简单、制造方便、无换向火花等特点。
As the driver of the micro multi-rotor craft, the micro BLDC motor was of simple structure, easy fabrication, non commutation spark and so on.
本论文通过对无卡轴旋切机原理和旋切曲线的研究，推导出了变速进给系统的数学模型，以保证所旋切的单板厚度均匀。
Based on the study of the lathe principle and peeling curve the thesis developed mathematical model of variable-speed feeding system to guarantee the even veneer thickness.
该发动机主体结构为一内置有旋流燃烧室的高速旋转无叶无塞内燃转子，能融压气、燃烧和排气做功于一体。
The engines main body structure is an internal-combustion rotor, which has no blade and no piston but has an internal revolved stream combustor.
设计完成的KRS 6型无油旋片真空泵，运行状况良好，能够满足包装系统的真空设备需求。
The KRS 6-type vacuum pump designed run well and could satisfy requirement of vacuum equipment in packaging system.
介绍我国市场上小径木无卡轴旋切机的旋切原理和改进后小径木无卡轴旋切机的旋切原理。
Briefed the principle of the small-diameter spindleless veneer lathes in the domestic market and discussed the principle for the improved model.
试验证明该理论可行并能用于研究无铰旋翼结构参数对桨叶气弹稳定性的影响，也能用于直升机旋翼的型号设计。
The experimental results verify that the feasible theory can be used to investigate the effects of structural parameters of hingeless rotor on aeroelastic stability.
通过因次分析和实验数据回归建立了新型微旋流沉降器的无因次准数模型。
A model of dimensionless numbers for a novel micro-cyclone clarifier was established through the method of dimensional analysis and regression of experimental data.
另外，采用旋磁治疗后，创面愈合较快，无感染。
Furthermore, after rotating magnetic field treatment, the wound healing was accelerated, and no infection occurred.
本文采用联立求解粘性剪切层和有旋无粘区的方法计算了再入钝头体层流近尾流场。
The near wake flow fields are calculated by simultaneously solving the viscous shear layer and the inviscid rotational region.
主要介绍喷气式流体旋流浮选器细煤浮选过程的模拟与分析课题的第一部分，即无维变量模型的建立与分析。
This paper describes the first part of a research project, "Establishing a model of dimensionless variables and its analysis".
采用恒扭矩旋盖，具有无瓶不灌装、无塞不上盖，无瓶无塞可自动停机的功能。
No bottle no filling, no plug no capping and automatically stop if cap and plug is under-supply.
采用恒扭矩旋盖，具有无瓶不灌装、无塞不上盖，无瓶无塞可自动停机的功能。
No bottle no filling, no plug no capping and automatically stop if cap and plug is under-supply.
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