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Study on error code performance of relay protection signal over optical fiber channel ;2. Some suggestions for the protection with the optical fiber channel construction and the maintenance are proposed.

分析了山西電網(wǎng)中以光纖作為保護(hù)通道的優(yōu)越性，針對(duì)不同的線路保護(hù)采用不同種類(lèi)的光纖保護(hù)方式999久久精品国产首页，并對(duì)光纖保護(hù)設(shè)備在安裝不卡视屏在线观看、調(diào)試及日后維護(hù)過(guò)程中出現(xiàn)的問(wèn)題進(jìn)行分析，為保護(hù)用光纖通道的建設(shè)及維護(hù)提一些建議黄网站免费看www。

We made an experimentally and theoretically research on SRS at low temperature (about 80K-190K) in highly single mode circular optical fiber. The experimental apparatus is designed and the principle of experiment is given. The SRS in highly single mode circular optical fiber is measured at different temperature. A series of SRS spectra is get in low temperature. On base of the spectra, we get a curve of the frequency shift and the half breadth with the temperature fluctuation.

對(duì)石英系圓芯光纖在低溫下(80K-190K)的受激喇曼散射進(jìn)行了初步的實(shí)驗(yàn)研究国产高清美女一级毛片久久，設(shè)計(jì)了實(shí)驗(yàn)裝置，給出了實(shí)驗(yàn)原理欧美一区看片网站，在不同溫度下對(duì)單模圓芯石英光纖的喇曼散射進(jìn)行了測(cè)量久久这里有精品九九，得到了在低溫條件下喇曼散射的一系列光譜圖，得出了喇曼譜線的頻移成年片精品视频网站在线观看网址、半寬隨溫度變化而變化的曲線免费观看在线播放A片。

In these lasers, a section of Erbium doped fiber without undergoing bump used as saturatable absorber. A self-written grating may be formed by stable standing wave in this absorber. Because selfwritten grating possesses a characteristic of very narrow rejection band and can suppress any other side-band effectively, so the multi-longitudinal mode and mode jumping in other normal fiber ring laser are removed in this one.

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The 3dB linewidth of presented fiber laser was about 4.0kHz, measured by the delayed self-heterodyne method with 30km single mode fiber.

采用延時(shí)自外差方法測(cè)量線寬，當(dāng)使用30km單模光纖延遲線時(shí)呦交专区，測(cè)量得到激光器的3dB線寬為4.0kHz色哟哟最新入口。

The exterior has bi-xenon lights with black interior reflectors, fog lamps, bonnet stripes, a carbon fiber bonnet scoop, carbon fiber mirror caps and a rear diffuser.

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Cooperating with enterprise, this project has developed surface adhering sand glass fiber bar and carbon fiber bar, conducting experimental research on mechanical property of FRP bar, measuring main mechanical property indexes of tensile strength, elastic modulus and ratio of elongation, etc.

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The fiber sensor is based on the fiber micro-bend effect and made by a kind of rubber that is sensitive to oil.

光纖傳感器依據(jù)光纖的微彎效應(yīng)進(jìn)行設(shè)計(jì)，采用對(duì)油氣敏感的材料制作亚洲国产精品片毛A片，實(shí)現(xiàn)對(duì)油氣泄漏的檢測(cè)亚洲see图10。

On the basis of test, analyse the reinforcement mechanism of structure of carbon fiber cloth reinforcing bar steel fiber concrete roof beam.

2在有關(guān)試驗(yàn)的基礎(chǔ)上，對(duì)碳纖維布加固鋼筋鋼纖維混凝土梁的抗彎承載力進(jìn)行了試驗(yàn)研究黄片AV在线免费看。

A single Fine Alumina Fiber Rod is made by binding together 1,000 Alumina Fiber Filaments (diameter 10μm for red rods and 15μm for white rods).

一根氧化鋁纖維是→1亚欧一级AV网站，000條纖維絲一起構(gòu)成(紅色纖維絲和白色纖維絲的直徑分別為10μm和15μm)。