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The invention is characterized in that: the ultraviolet flame sensor comprises a uviol piece, a meshed anode which is arranged on the uviol piece, a cathode substrate glass piece, a photocathode which is arranged on the cathode substrate glass piece, a glass ring which is arranged between the cathode and the anode, a vacuum orifice which is arranged on the glass ring, a plastic packaged base which is arranged under the cathode substrate glass piece, a cathode and an anode lead which are adhered to the plastic packaged base and are respectively connected with the cathode and the anode, and a plastic casing which is arranged around the plastic packaged base, the glass ring and the glass piece.

其特征在于，其中包括：透紫玻璃片；网状阳极，该阳极层制作在透紫玻璃片上；阴极衬底玻璃片；光电阴极，该层制作在阴极衬底玻璃片上面；玻璃环，该玻璃环制作在阴极和阳极中间；抽真空口，该抽真空口制作在玻璃环上；塑封底座，该底座制作在阴极衬底玻璃片下面；阴极和阳极引出线，该引出线粘接在塑封底座上，分别与阴极和阳极相连接；塑料外壳，该外壳制作在塑封底座，玻璃环和玻璃片周围。

High correlation between tree ring-width dependable chronologies at different elevations of these sampling sites shows that the high-frequency changes among tree ring chronologies are consistent, but there is some diversity in the low-frequency changes of tree ring chronology.

不同海拔树轮宽度可靠年表间高频变化一致， 10 a滑动的高生长和低生长的不一致则反映了低频变化的差异。

According to the method of determining the safe thickness of arch ring which is reinforced by adding a new arch ring,this paper proposes a method for determining the thickness of inner arch ring under the arch bridge.

参照拱圈上增设拱圈叠合受力加固法新设拱圈厚度的确定方法，对拱圈下内套拱圈厚度的确定提出设想，对拱圈安全厚度提出建议和确定方法。

Packing ring preparations 1 braided At the appropriate size of the axis of winding packing or packing ring using calibrated cutting machine; upon request, packing neatly cut into the butt, or miter (30-45 degrees), a cut of a ring, and use shaft or stem test size is appropriate.

编织盘根在适当尺寸的轴上缠绕盘根，或使用校准过的盘根环切割机；根据要求干净利落地切割盘根成对接或斜接（30-45度），一次切一个环，并用轴或阀杆检验尺寸是否合适。

A half-Keystone cross-section top- ring with improved carbon scavenging abilities is used, and the groove for the top ring is made more durable with the adoption of a cooled ring carrier that increases the groove's cooling capability.

当与对压缩机的一侧，从而降低了刀片和之间的压缩机房屋清拆封严相结合，提供卓越的涡轮增压器，这些反应几乎所有的发动机转速。

Linked with climb ring, triangle ring and ring is made of high-quality carbon steel plate by stamping, copper-coated Ni-Cr layer.safety belt is treated by high temperature which made it harder and more safety.

所配攀登挂钩、三角环、圆环等均用优质中碳钢钢板冲压而成，表面涂镀铜镍铬层。

Analysis of the main reasons is because of fatigue caused by factors such as the copper support ring was broken and the piston rod in the hydraulic cylinder telescopic frequently, the fracture茬口constantly scraping the inner wall hydraulic cylinder mill will pick缸壁, resulting in injury China, so that the speed of decline in hydraulic cylinder; job with the passage of time, strain and缸壁sealing ring, wear ring injuries are increasing, with China to increase the volume, and finally resulted in a serious decline in the speed of hydraulic cylinders.

分析主要原因是，由于疲劳等因素造成的铜质支撑环断裂，在液压缸活塞杆的频繁伸缩中，断裂茬口不断刮磨液压缸内壁，将缸壁拉毛、拉伤而导致内泄，使液压缸速度下降；随着工作时间的推移，缸壁拉伤和密封环、耐磨环的损伤都不断加重，内泄量加大，最后造成液压缸速度严重下降。

This ring will not be a three stone ring, a diamond anniversary band or a diamond engagement ring.

这戒指不会有三个石环、钻石或乐队周年钻石戒指接触。

According to ring road spacing ratio China's ring roads can be divided into three ring types of A, B, C: A type standard ratio is 1/ω; B type standard ratio is ω; and C type is 1/ω in the upper standard of longitudinal direction ratio and ω in the upper standard of transverse direction ratio.

根据间距比值可将中国环路分为A、B、C三种类型：A型标准比值为1/ω；B型标准比值为ω；C型在纵向上标准比值为1/ω，在横向上标准比值为ω。

Because of the bonded crown ring the catalytic activity of complexes can be improved and the induce period of the oxidation for p-xylene to p-toluic acid was shortened from～ 10h to 0.5～5h, the fashion and position of the bonded crown ring as well as the distance between the crown ring and activity center have distinct influence on the catalytic activity of complexes.

结果表明：1。键连的冠醚环均能显著提高催化活性，并大大缩短反应诱导期5-10h，使TOF从21～60提高到152～222，约增加了5～7倍；冠环的键连方式和部位以及与活性中心的距离对催化活性影响明显；2。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。