线状

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。

After that, CERA reckons,"supply may well struggle to meet demand, but an undulating plateau rather than a dramatic peak will likely unfold".

剑桥能源研究协会估计，在那之后，则石油供应可能开始难以满足需求，但其供应量会呈现出波浪线的起伏状，而非高居顶峰不下。

Avoid featheredges, long bevels and sharp internal line angles.

避免羽状边缘、长斜面边缘与内部的尖锐线角。

This type of filter is composed of quarter wavelength resonators arranged in a housing with the same ends short circuited.

这种滤波器是把1／4波长的、相同端短路的梳状线谐振腔安置在一小室中。

A slender,whip - shaped,parasitic nematode wormthat often infests the intestine of human beings.

鞭虫一种细长、鞭状的寄生线虫属，常感染人体内部

Observed by erect view,supine view and head down pronated view.Taken the film of full filled patern and mucosal pattern.Results:All 37 patients were successfully perfomed examine.

结果：37例患者均顺利完成食管双对比造影检查，发现膈上疝囊、食管胃环、齿状线上移、疝囊内有胃粘膜皱襞等食管滑动性裂孔疝征象。

Faults --Weak or slack back; roached back; sloping topline.

缺陷：背部松弛，无力；拱状的背部；背线倾斜。

Faults: Weak or slack back; roached back; sloping topline.

缺点：后躯看上去瘦削并且背部松弛；背部拱形状；背线倾斜。

Lacquered-silk anoraks layered under smocks or jumpers gave the show a sportier than usual edge.

漆-丝绸anoraks层状下smocks或跳线了显示对运动较正常的优势。

Tubular belt conveyor is a kind of new material conveying system and have many characteristics such as good seal environmental protection, the conveying line curving to arrange along the space, big transport obliquity, a long stand-alone distance at sophisticating geography term and have many advantages, for instance, low construction cost, convenient installation and maintenance convenience, dependable usage etc.

管状带式输送机是一种新型物料输送系统，具有密封环保性好、输送线可沿空间曲线灵活布置、输送倾角大、复杂地形条件下单机运输距离长等特点，同时还具有建设成本低、安装维护方便、使用可靠等优点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。