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The airstream surface may be un-faced or faced with a black non-woven glass tissue.

表面的气流可能会取消面临或面临着一个黑色的非织造玻璃纤维。

The author points out: if lots of the conflicts of philosophical foundation the 20th century's quantum mechanics faced with, well-known to everybody, should be logically attributed to the confusions of the some fundamental concepts in the classical electromagnetic field theory, the series of logic inconsistencies implied in the classical electromagnetic theory and the forms of difficulties the modern computational electromagnetism encounters while solving time-varying electromagnetic field should be also logically attributed to an anomalous fact that series of fundamental mathematical propositions relating with bispinor differential operator, which naturally appears in the formal expression about dynamic electromagnetic field, have not be solved really while the related complete mathematic physical models or well posed boundary value problems have not been built.

著者指出：如果说20世纪的量子力学之所以面对哲学基础众所周知的矛盾，在逻辑上最终不能不归咎于经典电磁场理论体系的一些基本概念并没有真正得到澄清的话，那么，经典电磁场理论体系隐含的众多逻辑不自洽问题与目前计算动态电磁场所面对的困境，则必须逻辑地归咎于与双旋度微分算子相关的一系列基本数学命题并没有解决，而相关的恰当数学物理模型至今没有真正建立起来的缘故。

As a type of complicated information system, E-government system is usually made up of many subsystems which be dealt by different security strategies, be distributed in geography, belong to different departments, their systemic users can be active in many systems in the same time. There are great capacity resource and user info in each subsystems. Therefore, E-government system is faced with validity, utility, dynamics, distributivity, real-time nature and compatibility etc. challenges in access control technology aspect.

电子政务系统作为一类复杂的信息系统，通常由多个应用着不同的安全策略、地理上分布的、分属不同部门的、多用户同时在线的子系统组成，各系统内部存在越来越多的海量资源和用户信息，因此电子政务系统在访问控制技术方面面临着有效性、应用性、动态性、分布性、实时性、兼容性等严峻挑战。

Sandwiches can be hot or cold with almost any kind of filling. One of the most popular kinds is the BLT－bacon, lettuce and tomato. Although it is a simple food, it can still be creative. Sandwiches can be served open-faced, with sushi inside or grilled with delicious fillings.

三明治里面的陷各种各样冷热均可食用最常用的一种馅叫BLT 即火腿、生菜和番茄虽然三明治做法简单但仍然具有创新性三明治可以做成露馅的单片吃可以在里面放入寿司还可以加入美味馅烤着吃

The love we are faced with may not be what we have long quested for; the life we are leading may deviate from what we have yearned for; similarly, our inward duty may be in disagreement with our outward action.

我们所面对的爱情可能并非我们的真爱，我们现在所处的生活可能并非我们所期望的生活，我们内心的责任可能与我们外在的表现是非统一的。

Kempers' study , the more layers the mesh screen type had, its resistance against gravity was higher, but its heat resistance and flow resistance were comparatively augmented. As mentioned in the preceding paragraph, it is extremely difficult for a single micro structure based on any of the three types to possess both low flow resistance and strong capillary force. Faced with this fact, the researchers have tried to mix the three micro structures in Table 2 into as many combinations as possible so that a composite micro structure with low flow resistance and great capillary force may be fabricated. After a thorough analysis, the groove combined with sintered metal or mesh screen has been found to be a better alternative. However, the groove combined with sintered metal will raise the flow resistance of the channel, and the aluminum substrate employed in this research cannot be sintered into a micro structure. As a result, the groove combined with mesh screen is finally chosen as the composite structure to enhance its capillary force and at the same time maintain its high permeability. In this way, the heat pipe will not fail due to the working angles.

Kempers 的研究当中提到，当网格结构越多层时，其对抗重力的能力也越强，但相对的其热阻以及流阻也越高，就如同前段所述，我们很难在单一结构当中找出一流阻低且毛细力之微结构；因此本研究便以表2中之三种微结构进行组合，找出一低流阻且毛细力强之复合式结构，经分析发现，沟槽搭配烧结以及沟槽搭配网格为较佳之组合方式，但由于烧结搭沟槽构造将会提高流道之流阻，且本研究使用铝做为基材，并无法使用烧结最为其微结构，故将采用网格搭配沟槽之复合式结构提高结构的毛细力，并维持沟槽结构的高渗透性，解决因角度造成热管失效的问题。

Can be combined with small seed-eaters without too many problems, after saying that I must point out mine have had territorial fights with Star's both Red Faced and Yellow Faced and Ruddies, but only when breeding or establishing a nesting area.

可以结合小种子吃，没有太多的问题后，说我必须指出，排雷已领土完整的斗争与明星的又红又专面对和黄河面临的ruddies ，但只有当育种或建立一个产卵区。

From the moment that the steamer began to smoke,the global environment was doomed to be faced with human's destruction.

从蒸汽机开始冒烟的那一刻开始，全球环境就注定了面临被人类破坏的命运。

And most as adjacent as Hong Kong Shenzhen, what kind of influence be faced with again in waterborne respect?

而与香港最为邻近的深圳，在水运方面又面临怎样的影响？

Fourth, real estate development enterprises will be faced with a new shuffle, the survival of the fittest is a big trend.

第四，房地产开发企业将面临着新的洗牌，优胜劣汰是一个大趋势。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。