查询词典 pineapple fiber

Studies on basic working principles and designs of fiber lasersThe basic working principles as well as the major characteristics of laser and fiber lasers are firstly reviewed,including the interaction between light and matter, the laser oscillation conditions and the spectrum distribution,the gain characteristic and spatial hole burning effect,the influence of external environment on the stability of laser output and the actual limits of fiber laser bandwidth;The designs of bidirectional single-mode Er-doped fiber ring laser and multi-wavelength laser is then discussed,respectively;The characteristics of dynamic grating reflection spectrum of the fiber saturable absorber is systematically analyzed.?

在激光型光纤传感器的设计、实验现象的理论解释等方面做了如下的研究工作：光纤激光器的基本原理与设计方案概述了激光和光纤激光器的基本原理，包括光与物质的相互作用，激光振荡的条件及频谱分布等激光产生的基本原理：掺铒光纤的增益性质，空间烧孔效应和外界扰动对激光输出稳定性的影响，光纤激光器的实际极限带宽等光纤激光器的相关知识；分别讨论了双向单纵模环形腔激光器和多波长激光器的设计方案；系统地分析了掺杂光纤饱和吸收体中形成的动态光栅的反射谱特性。

The Surface composition of grafted PET fiber was characterized by ATR-FTIR. THE results showed that there were no obvious differences between ungrafted and graft PET fiber in the spectra ,except that the typical peak of-OH in 3100cm~(-1) appeared in both Citric acid treated PET fiber and Acrylic acid treated PET fiber indicated citric acid and acrylic acid had been successfully grafted on the surface of PET fiber.

对样品的接枝效果进行红外光谱表征，发现无论是经过丙烯酸接枝处理，还是柠檬酸接枝处理，处理前后纤维的红外吸收光谱图都没有明显的区别，说明接枝前后纤维的主体性质没变，但是，二者在3100cm~(-1)处都出现了羟基的特征吸收峰，说明柠檬酸和丙烯酸都已经接枝上了PET纤维表面。

In the middle of 20 century, agreat lot of scholars simulated the relation between the velocity of action potentialpropagated along a myelinated fiber or an unmyelinated fiber and the fiber diameteror the temperature. The results were according to the experimental results. But by far,there are lacking in the quantitative analysis of the velocity of action potentialpropagated along a myelinated fiber and an unmyelinated fiber.

本文首先分析了动作电位在无髓神经纤维上的传递机制，得出了可用跨膜电流的移动速度来等效动作电位传递速度的结论，结合电缆模型与 H-H 模型，建立了动作电位传递期间神经纤维的等效电路模型，并在此基础上推导出计算传递速度的公式，对其进行了验证。

The carbon fiber complex such as combinations of carbon fiber/glass fiber, carbon fiber/carbon particles/ceramic particles, carbon fiber cloth/resistance wire have been developed toward smart functional composites and in the future it must play more and more important role on smart engineering structures.

炭纤维与玻璃纤维的复合、炭纤维与碳颗粒及陶瓷颗粒的复合、炭纤维布与电热丝的复合及其应用，将成为未来大型构件的智能化发展的重要方向。

Based on traditional wood fiber processing way at home and abroad, this paper draws up mathematical description theory of wood fiber, finishes the mathematical description theory of single wood fiber, sum up the reason of low density of wood fiber at microcosmos state, completed the laboratory study on Micron Flake Fiber High Strength Board, set up the forming methodology of this kind of wood-based panel.

本文在总结国内外传统法木纤维加工的基础上提出了木纤维数学描述理论，进行了单个木纤维细胞的数学描述，总结了现在木纤维强度低的微观原因，完成了微米长薄片木纤维高强度人造板的实验室研究，创立了该板种的形成方法学，所提出的MFB形成理论体系和加工方式，是利用木材微纳米技术在人造板加工业中开创出的一片新研究领域，提出了微米纤维细胞劈裂的条件。

A radiant energy path means comprising a first optical fiber waveguide means and a second optical fiber waveguide means; sensing means prismatically configurated so as to provide a direct reflective path from said first waveguide means, through said sensing means, to said second waveguide means, said sensing means being fabricated from material which absorbs a portion of a monochromatic radiant energy transmitted along said direct reflective path through said sensing means as a function of temperature; a monochromatic radiant energy source means optically coupled to said first optical fiber waveguide means, thereby introducing said monochromatic radiant energy into said first optical fiber waveguide means; and detecting means optically coupled to said second optical fiber waveguide means for detecting the intensity of the monochromatic radiant energy transmitted along said direct reflective path through said sensing means, the detecting means correlating the intensity of the transmitted monochromatic radiant energy with the temperature of the sensing means.

温度传感器组成一个联合：辐射能走了一首手段包括光纤波导手段和光纤波导第二手段；硒干旱prismatically手段配置以提供直接从反光路波导首次表示，次传感手段粗糙说，第二说波导手段飒传感手段伪造身份证从物质吸收了部分单色辐射能直接传送沿线说重 flective路径通过说温度传感功能为手段；一单色辐射能来源地说，就是先光光纤耦合波导手段次 ereby介绍说，首先说成单色辐射能光纤波导手段；一丁光学检测手段波导光纤耦合说二是加大检测手段的单色辐射恩顺沿说传染途径通过直接反光说传感手段，次五是加大检测手段的传播相关单色辐射能与温度传感手段。

The method includes the following steps: getting specific amount of knitted or unknitted natural fiber and dipping the natural fiber in the aqueous solution of silane coupling agent for 1-100min, taking out and drying the natural fiber, thus producing natural fiber with modified surface; then pressing the polylactic acid into sheet in a plate vulcanization machine; disposing 2-10 polylactic acid sheets into a die and arranging one modified natural fiber sheet between every two polylactic acid sheets; pressing and molding the sheets; in this way totally biologically degradable polylactic acid composite material can be made.

该方法为：先取一定量的经过编织或未编织天然纤维，将其浸渍在偶联剂水溶液中1～100分钟后取出，经干燥后得到表面改性的天然纤维。然后，将聚乳酸在平板硫化机中压制成薄板；将2～10片聚乳酸薄板放在模具中，且每2片之间放置1片改性的天然纤维，然后模压成型，得到可完全生物降解聚乳酸复合材料。

The function of 3dB fiber loop mirror in fine wavelength partition is studied. With this theory, a novel narrow linear band, dual-wavelength switchable Er-doped fiber laser is realized.2. An unpumped Er-doped fiber and broadband fiber Bragg grating with high reflectivity is served as an auto-tracking filter, where the space hole-burning effect appears when the laser signal travels and forms standing wave, thus the generation of multi-longitudinal-mode is suppressed. Then the high birefringence fiber loop mirror is introduced to act as comb-liked wavelength filter.

主要包括：1、发现3dB光纤环镜的精细波长分割作用，并利用这种分割机制，研制成功一种窄线宽、双波长可转换的掺铒光纤激光器。2、利用未受泵浦的掺铒光纤以及宽带高反射率的光纤布喇格光栅做自动跟踪滤波器，当穿行其中的激光信号构成驻波时，出现了空间烧孔效应，从而抑制了多纵模的产生，引入高双折射光纤环镜做梳状波长滤波器。

A stabilised optical fiber interferometric measurement system made with a 3×3 coupler and fiber Bragg gratings is presented. By employing the fiber Bragg gratings as in-fiber reflective mirrors, the system interleaves two fiber Michelson interferometers together that share the common-interferometric-optical path.

针对这一问题，提出利用光纤3×3耦合器和光纤光栅构成光路复合在一起的两个光纤迈克尔逊干涉仪构成的光纤干涉测量系统。

First, our country optical fiber industry development survey 1st, optical fiber industry development review (1) starts Our country optical fiber industry start to the last century70's intermediate stages, then places such as Ministry of Posts and Telecommunication, machinery, electron department system and Beijing,Shanghai many units, all invested the strength, was engaged in the optical fiber and the optical fiber prefabricates the stick the development work.

我国光纤产业起步于上个世纪70年代中期，当时的邮电部、机械、电子部系统和北京市、上海市等地的诸多单位，都投入力量，从事光纤和光纤预制棒的研制工作。

We stopped by the old fashion ice cream parlor Manhattan Beach Creamery for some refreshment. The "No Shoes, No Shirt, No Problem" sign on the wall epitomizes the beach lifestyle.

我们去商店区的一家老式冰淇淋店坐坐，墙上挂著「没鞋，没上衣，没问题」的牌子完全捕捉了海滩生活的随性及风格。

"If therefore", argues Bellarmine we can offer our prayers and our satisfactions in behalf of those detained in purgatory, because we are members of the great body of Christ, why may not the Vicar of Christ apply to the same souls the superabundant satisfaction of Christ and his saints--of which he is the dispenser?

" "因此，如果"，认为贝拉明（德indulgentiis ，十四）"我们可以提供我们的祈祷和我们满意的代表那些被拘留在炼狱，因为我们是成员的伟大基督的奥体，为什麼可能不是牧师基督适用於同样的灵魂满意的过剩是耶稣和他的圣人-他是在配药？