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The tuning hand wheel is connected to spindle of drive bevel gear. The tuner joint is inside case. The worm wheel is fixed on stepped shaft fixed by nut. The worm engage to the worm wheel is fixed inside case. The upper end of worm is connected to the driven bevel gear. The spindle of drive bevel gear across the hole on the upper cover is connected to the hand wheel.

其特征在于：壳体上有一槽体，调音手轮与主动锥齿轮的轴相连接，调音器接头安装在壳体相应调孔内，蜗轮固定在调音器接头后端的阶梯轴上，用螺母固定，与蜗轮相啮合的蜗杆固定在壳体相应的孔内，用空心螺栓将其固定，蜗杆上端与从动锥齿轮连接，从动锥齿轮与壳体之间有垫片，主动锥齿轮的轴穿过壳体上盖的孔内，并且与手轮连接，用固定螺栓固定上盖。

In the third type, the double-ring cloud wall is formed as a result of the development of cumulus convection inner region of typhoon into a well-closed inner cloud wall. The inner wall usually lasts for a period of time and then rapidly disappears.

还有一类双环云墙的形成是由台风眼内积云对流发展而演变为环状闭合内云墙的，这类台风的内云墙维持一段时间后即消散。

The main features of the new oil seal in the oil seal lip and the axis of rotation between the design of a wavy-coated layer of rubber oil seals inside the wheel, work together within the hub coaxial with the rotation, and the oil seal lip in its the outer surface of hub and inner dynamic seal between.

新型油封的主要特点是在旋转轴与油封唇部之间设计了一个包覆一层波浪状橡胶的油封内毂，工作时，内毂随同轴一起旋转，而油封在其唇部与内毂外表面之间实现动密封。

It is available to carry out numerical simulation and fluid dynamic analysis further. Based on Frozen-Rotor Approach and Rotor-Stator Approach, the numerical simulation was carried out in the centrifugal pump and the numerical results showed that the flow in the impeller and volute of centrifugal pump is periodically unsteady. Due to the interaction between impeller and volute the flow is characterized by pressure fluctuations and it is the strongest at impeller outlet and at the vicinity of the tongue. The unsteady pressure fluctuations are also one of the most important reasons to induce vibration and noise. Secondly, the flow field of the volute is characteristic of the vortex flow, and the vortex flow presents very complicated developing process which is creating, increasing and dissipating every now and then. All these lead to very large flow loss in the volute.

采用Frozen-Rotor冻结转子模式和Rotor-Stator滑移界面模式系统开展了不同工况下离心泵内叶轮与蜗壳耦合的定常和非定常流动研究，结果表明由于叶轮与蜗壳的干扰蜗壳进口周向流动的不均匀性是非常强烈的，特别是叶轮与蜗舌间的相互干扰最为强烈，一直影响到叶轮进口和蜗壳扩散管出口的流场；在蜗壳内整个流动是以旋涡形式向出口推进的，并随着包角的变化旋涡表现出十分复杂的产生、发展和耗散的演化过程，导致蜗壳内较大的流动损失。

The percentage of linear and so quick Figure 1 Three common control valve sleeve sleeve diagram Interchangeability of parts from Ball Valves the valve to see some adjusting mechanism trim can be easily replaced and maintained, for example, the sleeve valve sleeve can be easily replaced to achieve different flow characteristics; top and bottom-oriented trim can be easily turn the spool and the valve seat to achieve positive and anti-body to replace the valve body to achieve the air to open the way to replace gas off; valve isolation valve can be easily dismantled for the seat replacement and cleaning.

快开 线性等百分比图1 三种常用套筒控制阀的套筒示意图从阀内件的互换性看，一些调节机构的阀内件可方便地更换和维护，例如，套筒阀可方便地更换套筒实现不同流量特性；顶底导向的阀内件可方便地翻转阀芯和阀座来实现正体阀与反体阀的更换，从而实现气开和气关方式的更换；阀体分离阀可方便地拆卸，用于阀座更换和清洗。

Firstly in the paper the research of hydraulic characters and the optimize of structure have being carried out on the four bigger design schemes of permanent internal dissipation discharge tunnel reconstructed from the right banks diversion tunnel of Gongboxia Power Station with a method of theoretical analysis combined with test comparisons. On this basis , two form swirling flow internal dissipation schemes, vertical and horizontal axis are recommended to the construction unit of the station as the schemes to be selected next.

本文采取理论分析与试验比较相结合的方法，首先对黄河公伯峡水电站右岸导流洞改建为永久式内消能泄洪洞的四个较大设计方案进行了水力特性的试验研究与体型优化，在此基础上，向建设单位分别提供了竖井旋流内消能的推荐方案与水平旋流内消能的推荐方案。

The true and false cavities of aortic dissection could be displayed on the SE T1WI,T2WI for the B type in 10 of 12 cases.With SE sequence,the true-false cavities did not be showed but the endomembranous pieces could be seen for A type of 2 cases of aortic dissection.

对于SE序列不能区别真假腔的2例A型夹层，轴位T1WI可显示剥离的内膜片。2例主动脉迂曲形成涡流的B型夹层，T1WI和T2WI不能区别真假腔，也不能显示内膜片，加行GR序列轴位扫描，可清晰显示等信号的内膜片。

One transmission cell to another while maintaining the DVB-H service.· For a number of reception scenarios; indoor, outdoor, pedestrian and inside amoving vehicle, the transmission system shall offer sufficient flexibility and scalability to allow the reception of DVB-H services at various speeds, whilstoptimizing transmitter coverage.· As services are expected to be delivered in environments that suffer high levels of man-made noise, the transmission system shall offer the means to mitigate their effects on the performance of the receiving terminal.· As DVB-H aims to provide a generic way to serve handheld terminals in various part of the world, the transmission system shall offer the flexibility to be used in various transmission bands and channel bandwidths.

因此DVB-H采用分时方式的资料传送形式，把原本通道频宽是由其它节目共同分配享有的，现在只可以让某一个节目使用全部的频宽所以让节目传送的位元率提高了，相对的减少传送的时间，但跟DVB-T一样在单位时间内所传送的资料是一样多的，由於DVB-H采用分时多工的方式传送资料所以接收器只在该节目传送的时间内接收该笔资料，而其它时间则不接收然后在等一个单位时间内，该节目的资料再传送时在接收，如此开关开关达到收到整部节目的资料，并大量的减少持续接收节目所消耗的功率，接下来由於DVB-H采用4K正交分频多工编码的方式，虽然涵盖的范围没有DVB-T大但对高速移动的时候接收信号时的效果会比较好。

In this phase transformation range and under its elastic limit of shape memory effect range , the relationship of elastic modulus of SMA with temperature is nonlinear.

实验结果显示，SMA在100%沃斯田体与100%麻田散体相变化范围内，其弹性系会受到自身温的影响，在这个相变化范围内，SMA於形状记忆效应范围内，在其弹性限以下，其弹性系数与温度呈非线性关系，本研究藉由实验数据，建了弹性系与温的关系式。

Under conventional N fertilization and irrigation condition, N2O emissions during 2001-2002 and 2002-2003 in winter wheat and summer maize rotation system were 1959 g N hm-2 and 1250 g N hm'2, respectively; and 68%-86% of N2O emission occurred in summer maize growth season, the emissions mainly occurred in 2 weeks after N fertilization and irrigation. The highest flux rates were 5.06 mg m-2 d-1 and 5.60 mg m-2 d-1 in the rotation period of 2001-2002 and 2002-2003, which were happened at the ten-extended leaf stage in summer maize season when top-dressing N fertilizer was applied.

在冬小麦／夏玉米轮作体系农民传统的水肥管理处理中，2001-2002和2002-2003两个轮作周期内测得的N_2O的排放量分别为1959 gN hm~(-2)和1250 gN hm~(-2)，N_2O的排放主要集中在每次施肥和灌水之后的两周内，其中夏玉米十展叶期追肥后两周内N_2O的排放速率最高，2002年和2003年分别达到5.06 mg m~(-2)d~(-1)和5.60 mg m~(-2)d~(-1)。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。