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Its function is:①Changing gear ratio,expanding the torque of the driving wheel and the range of the rotational speed,to adapt the travel condition which frequently changes, like start, acceleration, climbing and so on, simultaneously causes the engine to work under the advantageous operating mode;②Under the premise of the invariable rotation, enables the automobile to travel back;③Using neutral, severances the power transmission, to make the engine start, idle, and is advantageous for the engine to shift gears or to carry on the dynamic output.

它功用是：①改变传动比，扩大驱动轮转矩和转速的变化范围，以适应经常变化的行驶条件，如起步、加速、上坡等，同时使发动机在有利的工况下工作；②在发动机旋转方向不变的前提下，使汽车能倒退行驶；③利用空档，中断动力传递，以使发动机能够起动、怠速，并便于发动机换档或进行动力输出。

We have an experienced team of translators and revisers and a good administrative management group to ensure projects are assigned and completed on schedule. With complete confidentiality, we offer a fast reliable translation services in many fields. Our success relies on the high quality work we do for each individual project. For each project in handles, Tianshi Translation assigns a different team of expert translators, editors, and proofreaders. All work is thoroughly proofread and checked before it is sent to the client; final output via laser print, disk, fax, and email.

对于所承接的每一个翻译项目，中心在完全保密的前提下，指定不同的专家翻译小组使用 Translation Memory 和 CAT 技术来进行翻译、编辑和校对，为每一个客户提供高质量、高水平、低价位的翻译服务，最后的翻译成品为激光打印件、磁盘文件、传真件和email文件，此外，还可免费提供术语数据库。

To simulate the temperature wave on the top of the pistons, the Profibus- based control system is designed. The control system manages to control the on- off and output power of the laser machine.

为模拟活塞上表面的温度波动，设计了基于Profibus的实验控制系统，对激光器的开启、关闭及输出功率进行控制。

The working principle is: compressed air into the oil mist from the input device, the vast majority of the output by the competent Road, a small part of the airflow into a pole on the positive direction of the airflow holes a, through the valve into the oil cup 5 c in the upper chamber, so that pressure on the oil surface.

其工作原理是：压缩空气从输入口进入油雾器后，绝大部分经主管道输出，一小部分气流进入立杆1上正对气流方向的小孔a，经截止阀进入储油杯5的上腔c中，使油面受压。

The invention relates to a desk type drill machine for preventing drill head wreckage, comprises chassis, supporting post, operating board covered in middle of supporting post, cabinet and generator; cabinet is equipped with tension pulley pressure sensor, belt tension unit and pressure foil gage; tension pulley is compacted on driving belt of drill machine, pressure foil gage is installed on top bar of tension pulley, the pressure foil gage is in electric connection with input end of controlling circuit, output controlling end of controlling circuit is connected to power input end of generator.

本发明是防止钻头折断的台式钻床，包括底座、支柱、套在支柱中部的工作台、以及机箱和电机，机箱上设有张紧轮压力传感器，由皮带张紧装置和压力应变片组成，其中的张紧轮紧压在钻床的传动皮带上，压力应变片设在张紧轮的顶杆中，压力应变片与控制电路的输入端电连接，控制电路的输出控制端连接在电机的电源输入端中。

The invention discloses a rotary bending corrosion fatigue test device. The device includes a rotary bending fatigue test device and a corrosion liquor supplying system; wherein, the rotary bending fatigue test device is used for mounting a test piece and applies bending load on the test piece during the process of driving the test piece to rotate and realizes the test on the fatigue data of the test piece. The corrosion liquor supplying system includes a liquor storage tank, a transfusion pump, a flow adjusting valve and a connecting pipeline. The corrosion liquor supplying system feeds the corrosion liquor to the test piece during testing in real time from an output opening.

本发明公开了一种旋转弯曲腐蚀疲劳实验装置，该装置包括旋转弯曲疲劳实验装置及腐蚀液供给系统，其中，旋转弯曲疲劳实验装置用于试件的装卡，并在驱动试件旋转过程中对其施加弯曲载荷，以及实现对试件疲劳数据的测试；腐蚀液供给系统包括储液罐、输液泵、流量调节阀及连接管道，腐蚀液供给系统通过其输出口实时向测试中的试件输送腐蚀液。

Yunnan Tobacco Research Institute, Yuxi 653100Abstract : In order to investigate the effect of medium and trace elements, organic fertilizer on appearance and internal qualities of sun-cured tobacco, search after some efficient ways to improve the qualities, by adding organic fertilizer in basal dressing and spraying trace elements on leaf surface, the results showed that both organic and medium or trace fertilizer having the effect of increasing output value and yield. Among the experimental treatments, magnesium fertilizer and manure plus rape cake showed the most.

为研究中微肥和有机肥对红土晒烟外观和内在品质的影响，探索提高和改善红土晒烟品质的有效途径，试验在基肥中加入有机肥，和大田生长期在叶面喷施中微量元素肥料，结果表明：施用有机肥的处理与对照相比，产量增加7.3%~20.9%，产值增加8.8%~25.3%，以厩肥＋菜籽饼处理的效果最好；四个喷施微肥的处理其产量和产值均超过了喷清水的对照，其中产量增加6.7%~15.6%，产值增加6.8%~20.5%，以喷施镁肥的增幅最大。

The results show that:(1)the low-noise source-follower circuit can be effectively used to measure the output of PVDF thin film;(2)the piezoelectric coefficient D33 of the PVDF is very sensitive on temperatures;(3)the value of D33 intensively fluctuate in initial loading stage,this means that a pre-load is needed in practice application to keep a constant piezoelectric coefficient D33 of the PVDF;(4)when the compressive load is imposed on the surface of the PVDF along a incline direction,D33 value is obvious changed with changing incline angle,and(5)the frequency bandwidth of the PVDF thin film is very wide,it is more suitable to measure strike or impact loading at various loading conditions.

结果表明：(1)低噪声源跟随电路可有效测量PVDF 薄膜输出；(2)PVDF压电薄膜的压电系数D33对温度很敏感；(3)D33值在加载初始阶段波动很大，所以实际应用中应给PVDF提供一个预压载荷，以确保有一恒定的压电系数D33；(4)当压载荷沿倾斜方向作用在PVDF 表面时，由于有剪切力作用，D33 值会随着倾斜角的变化发生显著改变；(5)PVDF 薄膜具有很宽的频响，更适用于测定不同载荷条件下的侵彻或冲击等动态载荷。

The capacitance gaps on both sides of mechanical oscillator in the torsion pole spring tiltmeter are difficult to be the wholly same because of the machining error, so the variation of ambience temperature and its grads will lead to the inconsistent variation of capacitances on both sides and the output of capacitance transducer circuit will also change.

由于加工误差的存在，扭杆弹簧倾斜仪中的机械振子的两边电容间隙很难完全一样，周围环境温度及其梯度波动会引起两边电容的变化不一致，电容传感电路的输出也会发生变化。

Busparallel expansion and pipeline technique are adopted to improve the average inputand output speed of recorder based on FLASH memory. 2 A concept of 'cluster' isintroduced. The using state message of each cluster is loaded in the spare area,following the target datum, to keep the pipeline sequence of multiple clusters' loading, which guarantee the average input speed of system. 3 Based on the using statemessage of every cluster, the Cluster Allocation Table established in memory enablethe system to manage the recorder flexibly in high speed, similar to a file managementsystem. 4 PowerPC 8245 based embedded system, along with Vxworks real-timeoperating system is introduced to make the system more easier to be applied to theprojects in the future.

本文所述的关键技术特点主要包括：采用了并行扩展以及流水线操作技术以提高基于FLASH芯片的存储区平均输入输出能力；引入了&簇&的概念，为了保证连续写入过程中的流水线顺序，系统向存储区加载每一簇有效数据后，紧接着还将向相应簇的空余区中加载该簇的使用状态信息；根据所有簇的使用状态信息在系统内存中建立&簇分配表&，可以支持系统快速灵活地管理存储区，即，类文件化的数据管理；采用基于PowerPC8245的嵌入式计算机硬件系统及基于Vxworks的嵌入式实时操作系统，提高了系统的整体性能及系统研发的延续性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。