极限环

In this paper, a unique kind of configuration, lunate channel, is adopted as the flow channel. The gas-liquid two-phase flow and boiling heat transfer characteristics of cryogenic fluid in these narrow channels are studied in detail.

本文采用独特的通道结构形式——极限偏心环缝，在宽广的参数范围内详细研究了这种狭缝通道中低温气液两相流体的流动及沸腾传热特性。

However, the heat transfer enhancement mechanism, as well as the effect of various parameters, such as configuration size, on the enhancement are not understood clearly yet.In this paper, a unique kind of configuration, lunate channel, is adopted as the flow channel.

本文采用独特的通道结构形式——极限偏心环缝，在宽广的参数范围内详细研究了这种狭缝通道中低温气液两相流体的流动及佛腾传热特性。

Results showed that the synergistic action of brominated epoxy 10% and Sb2O3 3% could improve the limiting oxygen index from 18 to 30 and gave good mechanical performance to PU coatings.

结果表明当溴化环氧用量为10%，在3%的Sb2O3协同作用下，可将聚氨酯涂料的极限氧指数从18提高到30，同时能保证聚氨酯涂料优良的物理机械性能。

Aremco says that this advanced coating exceeds the temperature limitations of conventional epoxies, phenolics and silicones and can be used in applications as high as 1427C.

Aremco公司称，这种先进的涂层的极限使用温度超过传统的环氧化合物或酚醛合物和硅酮等，并且可以在高达近1427℃使用。

When the thread ring gage is of correct lead, angle, and thread form, within close limits, this method is quite satisfactory and represents standard American practice.

如果这个螺纹环规的导程，角度正确及牙形在精密的极限范围内，那么这种方法是非常令人满意的，代表了美国的标准做法。

A computer simulation based on strong-weak model shows good agreement with the linear theory. The linear theory of the ion trapping instability caused by ions in equilibrium is also introduced in this paper.

包括不稳定性的增长率与中性化系数的关系、阈值与中性化系数的关系、束流的相干频率漂移和展宽、离子在空间的分布和尺寸、离子动态丢失的机制以及离子在储存环内积累的极限。

Saddle shaped AMF can produce a radial expanding force, which has more effective effect on resisting the pinch effect of self-generated azimuthal magnetic field of arc current. This effect of saddle shaped AMF can keep vacuum arc in diffuse mode under much higher current. So the limiting current interruption capacity of vacuum interrupter can be enhanced.

为了进一步提高纵向磁场对真空电弧的控制作用，本文提出在真空灭弧室的触头间引入从触头中心向边缘逐渐增强的非均匀纵向磁场，马鞍形纵向磁场会对真空电弧产生一个径向扩张力，而纵向磁场分布的合理设计可以使这一扩张力进一步抑制真空电弧自生环向磁场对电弧的箍缩作用，从而使真空电弧在更大的电流时仍能保持在扩散态，使真空灭弧室的极限电流开断能力得以提高。

Next, we present a method of designing a rotationally symmetric superresolving four-zone plate for dual wavelengths. The system performance of the design is shown in this thesis, with discussions in details.

接著，我们提出一个具有四个环带的滤波片之设计，用於使光学系统在两个不同的波长下，能同时达到超越绕射极限的效果。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。