恒定

Based on the second law of thermodynamics, irreversible analysis of forced convective heat transfer through a duct including thermal entrance region is made on the condition of constant wall heat flux and constant wall temperature respectively.

利用热力学第二定律，分别在壁面热流恒定和壁面温度恒定两种情况下，在考虑热进口段时对管内对流换热过程进行了热力学分析。

The entropy density is constant ahead of the shock.

冲击波前方的熵密度是恒定的.

How important is it to have an even temperature when you're working?

工作时周围环境温度恒定有多么重要呢？

This paper shows that the neutrino does not violate the law of parity conservation, P and CP violation comes from the vacuum. If we take vacuum into account, the law of P.C. T conservation is universally true.

本文证明了中微子并不破坏宇称守恒定律和P与CP的破坏都来源于真空，如将真空也计算在内，则P、C、T守恒定律都普遍成立。

It allows the train to maintain a constant speed through the twists and turns of existing track.

它使火车在通过现有轨道的弯曲处时得以保持恒定的车速。

However, the unstable flow is usually considered as stable flow in the calculation of natural river water surface curve in order to minimize the calculation work.

但在天然河道水面线计算中，为了节省工作量把不恒定流视为恒定流。

A process taking place at constant temperature is said to be isothermal.

温度恒定时发生的过程叫做等温过程.

The constancy of the speed of light seems, at first thought, unremarkable.

光速恒定, 初看起来好像很平常.

The characteristic of variation of resistance for Polysilicon microresistor with time was measured under constant power operation using Digital Constant Power System ( DCPS).

利用数字式恒定功率测试系统（DCPS）对多晶硅微电阻进行恒定直流功率负荷下电阻随时间变化特性的测量实验。

Finally, the inability to make the storage curve of four parameters by the theory of unsteady flow is discussed and the conclusion that it is unnecessary to offer the storage curve of parameters to flood routing computation by the computer method of unsteady flow is reached.

文章最后还就用非恒定流理论制作四参数库容曲线的不可行性及用非恒定流电算方法为调洪演算提供多参数库容曲线的不必要性等问题进行了讨论。

At any given instant the distribution of molecular speeds is always constant under the same conditions.

在相同的条件下,分子速度分布在任何时候都是恒定的.

These wave functions correspond to states of constant energy E.

这些波函数对应于具有恒定能量E的态.

In undisturbed inertial motion, the angular momentum is constant.

在无扰动惯性运动中, 角动量是恒定的.

In a constant electric field, a charged particle experiences constant acceleration.

在恒定电场中, 带电粒子得到恒定的加速度.

The test gave consistently positive results with virulent virus.

用强毒病毒时,此试验恒定地呈现阳性结果.

The characteristics of inconstant flow arisen by daily regulation of power station are summarized.

概括电站日调节非恒定流特性,提出三峡枢纽非恒定流通航水力标准.

We may take the form of a thermostatically controlled housing temperature.

我们可以采取恒定控制罩温的形式.

A precision pressure regulator maintains the carrier-gas pressure constant.

精密压力调节器可以维持载汽压力恒定.

Jupiter's main auroral ring, caused by interactions internal to Jupiter's magnetic environment, is constant in size.

木星的主要极光圈是由木星磁性环境所固有的交相感应引起的, 其大小是恒定不变的.

The model is non-coupling and non-saturating sediment transport, and it can calculate steady and unsteady flow.

模型为 非 耦合及非饱和输沙模型, 恒定和非恒定情况都可以计算.

It enables the rotor with constant speed for maintaining steady output voltage.

它使转子能以恒定速度转动,保持输出电压稳定.

Namely windows temperature level and distribution asymmetry are ensured by thermal control system within allowable range.

为此,要对窗口组件进行热控制,以有效地控制窗口与周围环境的热交换过程,使得窗口的温度恒定、均匀.窗口热控制是在被动热控的基础上加以主动热控来控制窗口热状态的.

Reproduction is constant irrespective of climate and other variations.

不管气候与其他环境条件如何变化,繁殖能力维持恒定.

Since only when the output SNR is constant can the probability of detection be kept stable along with a desired false alarm rate, the goal of the threshold detector is to maintain a constant output SNR by using the non-coherent combination.

因为只有当输出信噪比恒定时，才有可能在虚警概率恒定的同时也保证检测概率稳定，所以这个门限监测器的目的就是要通过非相干累加来实现累加后的等效信噪比的恒定。

For horizontal loading, all specimens'capacity bearing loading varied as axial compression applied to them changed.

对于恒定轴压比下水平加载, 试件承受水平荷载能力随轴压比的改变而有所变化.

Temperature becomes uniform by heat conduction until finally a permanent state is reached.

温度通过热传导变得一致，直到最终达到恒定状态。

This paper deduces the Law of conservation of charge by Maxwell equations, and discusses some physical problems which are in connection with the Law of conservation of charge: steady electric field, Kirchhoff law.

本文应用麦克斯韦方程推导电荷守恒定律，并研讨与电荷守恒定律有关的物理问题：恒定电场、基尔霍夫定律等。

The unsteady character of the model was used with an iterative technique to approach channel steady flow.

模型采用显式非恒定流渐近迭代法计算河流恒定流场。

The four-dimensional momentum current density tensor of electromagnetic field is defined. Both law of the electromagnetic energy transformation and conservation and law of the electromagnetic momentum transformation and conservation are written into four-dimensional covariant form.

定义了电磁场的四维动量流密度张量，并将电磁能量转化和守恒定律及动量转化和守恒定律写成了四维协变形式。

The brick-built property keeps the temperature at an even level throughout the year.

那栋砖砌的房子里全年温度恒定。