无摩擦的

Furthermore, we discuss the relatioship between the no arbitrage condition and the state prices vector, then characterize the no arbitrage conditions in terms of the dual theorem of optimization.

然后利用优化理论中的对偶问题刻画了摩擦市场下的无套利条件，最后讨论了无套利条件与期限结构之间的关系。

Comparing with traditional friction FSW,the characteristics of FSB can be summarized as follows:rapid dissolution of base metals(instead of the deformation of hard parent metal),elimination wear of the pin by steel parent metal and no key-hole.

与传统搅拌摩擦焊的区别在于，用母材的快速熔解代替其塑性变形；可避免钢材对针端的磨损；无匙孔。

Based on true triaxial tests, this paper proposes an angle of equivalent internal friction a.

结合以往的真三轴试验结果，建议了一个复杂应力状态下的等效内摩擦角，在此基础上提出了一个考虑中主应力影响的无粘性土(c=0)的破坏准则。

However, if inextensible horizontal reinforcing elements are placed within the soil mass, as shown in Figure 1b, these reinforcements will prevent lateral strain because of friction between the reinforcing elements and the soil, and the behavior will be as if a lateral restraining force or load had been imposed on the element.

然而，如果在土体中加入无伸展性的横向加固元素，如图1b 所示，这些加固物会由于加固元素与土体间的摩擦作用而防止横向应变的发生，其性能就如同在加固元素上施加横向约束力或荷载。

After main parameters of impeller and casing are optimized using the numerical predictions of aerodynamic performance, the size of the vaneless diffuser and the relative place between the impeller and casing are optimized to decrease the friction loss.

利用气动性能数值预估对叶轮和蜗壳的主要参数进行优化后，再对无叶扩压器的大小和叶轮与蜗壳的相对位置进行优化，减少摩擦损失，最终得到的后向通风机测试结果，全压和效率均提高了11％。

ZA alloy is based on Zn and composed of Al, Cu, Mg added as alloying elements. It is a kindof environmental friendly material that possesses characteristics of high strength, better plasticity,excellent wear resisting property, low friction coefficient and high specific strength, low meltingpoint and no magnetic. ZA alloy has been widely applicated in the fabrication of mechanical partsand models, such as bearing, axle sleeve, pressing plate and turbine. However, the joiningproblem of ZA alloy that hasnt been solved has limited its application in some fields.

ZA合金是以Zn为基，添加了Al、Cu、Mg等合金元素，具有强度高、塑性好、耐磨性优良、摩擦系数低及较高的比强度、低的熔点、无磁性等特点的环保材料，广泛应用于制造轴承、轴瓦、压板、涡轮等机械零件及模具等，但由于连接问题没有解决限制了ZA合金在一些领域的应用，也因此成为ZA合金急亟待解决的问题之一。

In the discotheque of these DJ music like a hand rotating friction piercing sound, has been let go is another one song, so could constitute an endless sowing the height match the music.

在迪斯科舞厅中的这些DJ喜欢用手转动唱片发出刺耳的摩擦声，放手时已是另一条曲子，如此构成一个可以无止境播下去的音乐大拼盘。

The patented optimal inserted direct-drive servomotor. Rotary cutter. Convenient installation, clean and non-polluted, low noise and vibration. Combined with aerospace technology, high speed startup/brake, precise needle stop locating. It only takes 0.12s from 0 to 4000 stitches. The absence of V-belt avoids belt abrasion and spooling thoroughly. Reduce greatly the failure rate and improve highly sewing efficiency.

优化的内置式专利直驱伺服马达；圆刀剪线设计；低振动、低噪音、安装方便、清洁环保；结合了航空航天技术，起缝、停车迅速、停针定位精准，0至4000针的转换只需0.12秒；无&V&字型皮带传动，彻底解决了因皮带摩擦而产生的料屑污染、皮带缠线的问题，并且大大减少停车、提速时的故障率，提高缝制效率。

The patented optimal inserted direct-drive servomotor. Rotary cutter. Convenient installation, cleannon-polluted, low noisevibration. Combined with aerospace technology, high speed startup/brake, precise needle stop locating. It only takes 0.12s from 0 to 4000 stitches. The absence of V-belt avoids belt abrasionspooling thoroughly. Reduce greatly the failure rateimprove highly sewing efficiency.

优化的内置式专利直驱伺服马达；圆刀剪线设计；低振动、低噪音、安装方便、清洁环保；结合了航空航天技术，起缝、停车迅速、停针定位精准，0至4000针的转换只需0.12秒；无& V &字型皮带传动，彻底解决了因皮带摩擦而产生的料屑污染、皮带缠线的问题，并且大大减少停车、提速时的故障率，提高缝制效率。

The large drum brake of Nissan diesel technology provides the vehicle with larger brake torque for both service brake and parking brake and ensure driving safety.

引进日产柴技术的大型鼓式制动器，提供更大的行车和驻车制动力矩，保证行驶安全性；前后制动器采用多种规格弹簧制动缸和加长的制动调整臂；凸轮端部安装磨损指示垫片，方便检查磨损；无石棉摩擦材料，环保耐磨。

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。