The system controls a tunable fiber Fabry-Perot filter with sawtooth wave voltage and synchronous signal of its digital phase to interrogate FBG sensors in a single fiber. Meantime, a reference FBG and a digital thermometer provide an accurate reference wavelength, which is used to calibrate the wavelength readout of the TFFP in real-time by a digital signal processor.

解調(diào)系統(tǒng)利用鋸齒波電壓信號(hào)和數(shù)字相位同步信號(hào)控制可調(diào)諧光纖法布里珀羅濾波器91精品国精品国产自在久国产，對光纖光柵傳感器陣列進(jìn)行掃描式尋址在线观看国产更新AV，同時(shí)采用非測量環(huán)境中的參考光柵和數(shù)字溫度計(jì)提供精確的參考波長欧美妇乱子A片免费，并由高速數(shù)字信號(hào)處理器實(shí)時(shí)校準(zhǔn)濾波器的波長讀取值，很好地消除了濾波器調(diào)諧的溫度漂移欧美一A片网站、非線性和蠕動(dòng)性引起的測量誤差999日本男人天堂啊啊啊。

A file of data considered permanent or semipermanent, i.e., an arrangement or ordering of a series of record; also, a single record from such a file.

一種永久性或半永久性的數(shù)據(jù)文件，也就是一系列記錄的排列和定序欧美三级自拍视频；也指這種文件中的單個(gè)記錄7788色婷婷。

Although the first thesis on Ferroresonance was published in 1920, FR is still not a fully understood phenomenon. This thesis focuses on single phase FR in Gas Insulated Switchgearwith inductive potential transformers, fed by the circuit breaker grading capacitance. In principle, FR is a forced oscillation in a non-linear series resonance circuit including a capacitance and non-linear inductance, which shows significantly distorted voltage and current waveforms.

中文摘要雖然第一篇有關(guān)鐵磁共振（Ferroresonance，簡稱FR）的文獻(xiàn)早在1920年即被發(fā)表国产丝袜熟女视频一区，但是此一特殊的現(xiàn)象至今仍然未被完全了解一级毛片精品免费播放，本論文將討論電力系統(tǒng)中之氣封絕緣開關(guān)設(shè)備（Gas Insulated Switchgear，簡稱GIS）久久综合网天天桃花网，由於斷路器的極間電容和電感型比壓器（Potential Transformer丁香婷婷五月综合，簡稱PT）的非線性電感所構(gòu)成的單相鐵磁共振；理論上性香港XXXXX免费视频播放，鐵磁共振是由電容和非線性電感所構(gòu)成的非線性串聯(lián)共振免费真实处破视频在线观看，造成電壓和電流波形明顯的畸變。

In front of these men ran a single figure in a strange shako and a blue coat, with a swarthy sunburnt face and a hooked nose.

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A shaving brush can be bought for a little bit more than a single can of shaving foam but can last a lifetime.

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Built in a modern factory, a park home is a single storey, timber d construction, which sits on a steel chassis.

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In a general equilibrium model, a tax on a single factor in its use only in a particular sector can affect the returns to all factors in all sectors.

在一般均衡模型中，對僅在某一特定部門使用的某種要素課稅玩中年熟妇丝高跟视频，可能影響到所有部門的所有要素的收益直播日韩亚洲自拍AV。

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

論文的主要工作如下： 1研究了飛機(jī)裝配型架骨架設(shè)計(jì)重用技術(shù)，在總結(jié)歸納骨架線框結(jié)構(gòu)類型的基礎(chǔ)上999免费视频，應(yīng)用模板驅(qū)動(dòng)的方法建立了骨架線框庫日韩视频在线观看国产，通過骨架線框零件的實(shí)例化和離線編輯實(shí)現(xiàn)骨架線框的重用，有效利用設(shè)計(jì)資源动漫专区第一页，減少重復(fù)勞動(dòng)亚洲色图10p； 2提出窮舉幾何對象的裝配特征直接獲取方法，遍歷零件模型的幾何對象，從中捕捉所需裝配特征亚洲综合无码区在线观看，該方法簡捷国产爽视频在线观看视频、高效；提出向裝配面投影的裝配特征間接獲取方法WWW欧美也操也射视频，該方法在現(xiàn)有特征基礎(chǔ)上生成裝配特征国产自产在线A级毛片，解決了部分裝配特征難以直接獲取的問題； 3研究了基于裝配特征的飛機(jī)裝配型架骨架自動(dòng)裝配技術(shù)999色综合，采用一種二叉樹裝配模型表達(dá)骨架的裝配關(guān)系黄色不卡av在线，并通過裝配特征的分配、獲取和賦值三個(gè)步驟A级毛片毛片免费观的看久久，實(shí)現(xiàn)了骨架分別與飛機(jī)產(chǎn)品和可調(diào)支承的自動(dòng)裝配亚洲免费视频一区，避免了繁瑣的人工交互操作，提高了骨架設(shè)計(jì)的效率和規(guī)范化程度99久久久国产精品免费手机版； 4研究了飛機(jī)裝配型架骨架零件間建模技術(shù)黄色一二区在线播放，在總結(jié)歸納骨架元件相貫處理方式的基礎(chǔ)上，提出了骨架元件單剪切相貫男人扎爽进女人j网站视频无遮挡、雙剪切相貫和互剪切相貫的實(shí)現(xiàn)算法9色蝌蚪，簡化了骨架相貫處理的過程； 5基于以上研究日韩毛片在线中文字幕不卡，在CATIA平臺(tái)上開發(fā)了飛機(jī)裝配型架骨架快速設(shè)計(jì)子系統(tǒng)亚洲一级国产视频，并應(yīng)用于某大型航空企業(yè)的裝配型架設(shè)計(jì)，提高了設(shè)計(jì)效率和設(shè)計(jì)質(zhì)量先锋影音官网。

"A window in a vertically slid ing frame is called a sash window: a single-hung sash has only one half that moves; in a double-hung sash, both parts slid e."

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Since the establishment of the company, in a short period of years, from a small scale, single-line services and freight services company, has now developed into a certain scale, multi-line, a wide range of modern logistics enterprises.

公司自成立以來在线免费观看高清无码黄色视频，在短短的幾年內(nèi)欧美人人干，已經(jīng)從一家規(guī)模小，路線及服務(wù)內(nèi)容單一的貨運(yùn)服務(wù)公司一级做a爱黑人又粗又硬，發(fā)展成為現(xiàn)在具有一定規(guī)模国内乱伦自拍视频，多線路，多元化的現(xiàn)代物流企業(yè)处女福利视频。