As the front foot slipped ; the rear foot became unsteady .

前脚一滑，后脚也站 不 稳。

Come down quickly the ladder is unsteady !

梯子不 牢，快下来！

Airflow temperature ; Thermal conductivity ; Unsteady heat transfer coefficient ; Wall rock heat transfer ;

风流温度；导热系数； 不 稳定传热系数；围岩传热；

She knew first-hand the impact an unsteady parent could have on a sensitive young girl .

她有亲身体验，知道情绪 变化无常的家长对一个敏感的小女孩会产生什么影响。

The quality of being unsteady & varying and irregular .

不 稳定、容易变化和不规则的属性。

On reaching the fresh air he was sufficiently unsteady .

他出来叫凉风一吹，可就 有些 东倒西歪了。

While in calculation of unsteady state problems the transient terms are always knotty problems to deal with .

但是在求解 非 稳态 流体 流动问题时，对 非稳态项的处理一直是个棘手问题。

A numerical investigation is carried out for the phase change in the unsteady expansion of humid gases .

采用数值方法对 激波 管 非 定 常膨胀过程中，汽液相变与流场的相互作用进行了模拟。

This paper presents a ALGOL program for Calculating The lift distribution on wings with control surface in steady and unsteady subsonic flow .

本文提供了计算亚音速偏转操纵面机翼的定常和 非 定 常升力分布的算法语言程序。

Flapping and rotary gap have been investigated with the help of transonic unsteady aerodynamic forces .

使用跨音速 非 定 常空气动力，对扑动间隙和旋转间隙进行研究。

His voice was unsteady and only just audible

他的声音 发颤，而且小得只刚刚能听见。

The boy was very unsteady and had staggered around when he got up

男孩 站立 不 稳，并且起身后四下走动时步子踉跄。

A time-accurate three-dimensional Navier-Stokes solver of the unsteady flow field in a transonic fan was carried out .

采用全流道非 定 常数值模拟方法对进口 稳态总压畸变条件下跨声速风扇流场进行求解。

Formulations of the lift and the thrust are derived based on the three-dimensional unsteady vortex lattice method and the effect on instantaneous shape velocity is analyzed .

推导了新的基于空间 非 定 常涡格法的扑翼飞行器升力和推力的计算公式，然后分析了瞬时形状速度对它们的影响。

Steady and unsteady heat transfer of bottom electrode were simulated by FLUENT on the basis of2D heat transfer model .

采用Fluent软件和文献建立的二维传热模型，对底电极稳态和 非 稳态的传热过程进行了数值模拟。

A numerical method is developed to simulate the unsteady flows involving moving boundaries .

发展了可用于模拟包含运动边界的 非 定 常流动的数值方法。

A special type of unsteady motions which bear a resemblance to plane wave solutions of the linear theory of elasticity can be constructed .

一种特殊类型的、和线性弹性理论中的平面波解有点相像的 非 稳态运动可以建立起来。

With Time-Accurate simulation about one transonic fan stage unsteady flow some sketches related to unsteady flow are understood .

文章通过对一跨音风扇级 非 定 常 流场时间精确模拟，对叶轮机非 定常流动建立了一定理解。

Unsteady testing for oil and gas well includes testing of drawdown curve and build-up curve .

油井和气井的压力 不 稳定测试，包括压降曲线测试和压力恢复测试。

He poured coffee into the mugs and with an unsteady hand held one of them out to David .

他把咖啡倒进杯里，然后一只手颤 巍巍地端了一杯给戴维。

The one dimensional model is employed to simulate the daily regulating unsteady flows below Shuikou reservoir .

用一维 不 稳定流数学模型模拟枯水期水口电站下游日调节 不 稳定 流。

The time-average of the unsteady flow-field obtained in the computation is discussed .

本文论述了计算所得的 非 稳态流场的时均值。

When is a Flow Compressible For Both Steady and Unsteady Flow w_680 ?

高比压环流器等离子体位形的稳定性什么时候流动是可压缩的对 定 常 和 非 定 常流来说w_708？

Research on Three Dimensional Viscous Unsteady Flow and Excitation Force of Turbine Stage

透平级三维粘性 非 定 常流动和气流激振力的研究

A mathematic model has been built for the unsteady heat transfer from the kettle to the oil inside .

为此建立了高温超高压釜体到釜腔内液压油的 非 稳态传热模型。

The problem of rotor-bearing with nonlinear stiffness under an unsteady oil-film force was studied when rub-impact happened .

研究了在 非 稳态油膜力作用下非线性刚度转子系统发生碰摩时的振动问题。

State space modeling of unsteady aerodynamics for aircraft at high angle of attack is analyzed here .

对建立纵向大迎角 非 定 常气动力模型的状态空间法进行了分析。

Conduction : steady and unsteady heat conduction planar wall radial system fin lumped-heat capacity method .

热传导：稳态与 暂态热传导，平面壁，径向系统，散热片，总容量法。

They were unsteady on their feet and rather uncoordinated .

他们 站立 不 稳，协调性较差。

By using inverse method the analytical solutions of couple stress fluids were obtained for steady and unsteady cases .

本文采用逆方法研究并获得了应力偶流体的定常和 非 定 常精确解。