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Results based on experiment and measurement data indicate that, when 244 nm argon ion laser emits 40 mW UV light, the curve of refractive index changes in single mode hydrogen loading fiber is exponential type (Ac=1.632×10-6 t 0.76912), exponential growth is obvious in the beginning, a very good linear region is following, and then refractive index increments reach saturated.

结果表明， 244 nm氩离子倍频激光器输出光功率为40 mW时，普通载氢光纤光致折射率变化量随曝光时间总体上呈现指数分布关系Ac=1.632×10-6 t 0.76912；在曝光时间较短时，造成的光栅强度较弱，光致折射率变化量有明显的指数增长趋势，之后是一段较好的线性区域，这时两个测量模型的结果得到了很好的印证，随着曝光时间的继续增加，光致折射率变化量达到饱和。

At the same time, if the processing, torsion spring, forming the middle ear can be one-time Extension Spring, high-speed production of multi-functional Extension Spring Battery Spring machine; with the Company's exclusive agent in Japan Auto Spring Length (J-1 type), can be In the spring production process, the automatic adjustment of the machine, through amendments to spring pitch to ensure the accuracy of spring.

如能同时加工压簧、扭簧，又可一次性成型中耳拉簧，高速生产电池弹簧的多功能拉簧机；配合本公司独家代理的日本弹簧自动检长机(J-1型)，可在弹簧加工生产过程中，自动调节机器，通过修正弹簧节距来保证弹簧的精度。

The follows are the main works of the paper.1. The sensors applied in the measuring and controlling system are studied. Design of structure and size of large range extensometer and improvement on its type of fastening are thoroughly discussed.2. The application of the PID control is researched.

本文的主要工作有： 1、分析了测控系统中采用的传感器，并着重研究了大量程引伸计结构尺寸的设计及夹持机构的改进； 2、研究了PID控制器的应用。

This paper summarizes previous discussions about three important issues: 1 What type of attention is most facilitative for second language acquisition?

本文综述过去有关注意的三个重大问题的讨论：1）什么类型的注意最有利于二语习得？

As a replacement of valve number 1 with Red Valve's Type A and pneumatic fail-safe system 700, valve number 3 has accomplished an improvement in the fluid dynamics of the system.

作为1号阀的替代品，美国红阀公司A型夹管阀和无故障气动系统700，也就是左图中的3号阀，极大地改善了流体介质的流动性。

The feminine predilection increases to 5:1 for multiple aneurysms. Other risk factors for cerebral aneurysm development include a history of smoking, previously ruptured cerebral aneurysm, first degree relative with cerebral aneurysm, polycystic kidney disease, Erhlers Danlos type IV, neurofibromatosis, aortic coarctation, and the presence of either an anomalous or fenestrated intracranial artery.

除去儿童微动脉瘤，女性发病率更高约3：2，多发性动脉瘤女性发病率升高至5：1，其他危险因素包括吸烟史，破裂的动脉瘤病史、一级亲属患有动脉瘤、多囊肾、Erhlers Danlos综合症IV型、神经纤维瘤病、主动脉缩窄、有异常或穿通血管。

It was also discovered that the existence of FIP 1L 1-PDGFR a fusion gene in some chronic eosinophilic leukemia can help to predict the sensitivity of this type of leukemia to Imatinib treatment.

我们还发现融合基因FIP 1L 1-PDGFRα在某些慢性嗜酸性白血病细胞中的检测阳性可预测该类白血病对Imatinib治疗的敏感性。

Knife-type valve: Features 1, ultra-structure length, saving materials, piping systems can greatly reduce the overall weight of 2, the effective space occupied by small, can effectively support the strength of pipelines can reduce the possibility of pipeline vibration 3, flashboard selected austenitic stainless steel, Corrosion performance greatly improved, which can effectively prevent the corrosion caused by gate leakage sealing diarrhea 4, on the use of flexible packing seal PTFE, sealing reliable, flexible and lightweight 5, the gate with Knife function, can effectively break the gates of all types of media objects

刀型闸阀：产品特点 1、超短结构长度，节省材料，可使管路系统整体重量大大减轻 2、占用有效空间小，能有效支持管道的强度，可减少管道振动的可能性 3、闸板选用奥氏体不锈钢，耐腐性能大大提高，可有效的防止由于闸板腐蚀引起的密封泻漏 4、上密封填料采用柔性 PTFE ，密封可靠、操作轻便灵活 5、闸板具有闸刀的功能，能有效的闸断介质中各类杂物

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

WSThis FH Honda car company development machine type the four-wheeler change direction system(Furukawa, 1989, its system usage 2 sets change direction organization, respectively is front rotate toward the organization and empress rotate to the organization, in the interval with change direction stalk connect with each other, such as diagram 1-3 show.

本FH Honda汽车公司发展出机械式四轮转向系统(Furukawa，1989，其系统使用两套转向机构，分别为前轮转向机构与后轮转向机构，其间以转向轴相连，如图1-3所示。

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。