长周期

长周期X射线驻波技术及其应用

Long period X - ray st and ing wave and its applications

CO2激光对称烧写长周期光纤光栅的方法研究

A Novel Method for Fabrication of Long Period Fiber Grating with CO_2 Laser

时效的前期阶段观察到了一种长周期调制结构，命名为调制结构I；DNA与衰老

Its structures in different aging stages were observed by TEM . DNA and Aging

长周期光纤光栅传输谱的matlab仿真

Simulation of Long-Period Fiber Grating Transmission Spectral Characteristics Using Matlab

PET生产中热媒长周期稳定运行的操作

Ensure heat medium long period stable operation in PET production

用小角X射线散射法对辐照聚乙烯在不同条件下拉伸及热处理后的长周期进行了研究。

Long period of irradiated polyethylene strectched and thermally treated under different conditions has been studied by small-angle X-ray scattering .

长周期光纤光栅（LPG）均衡滤波器在光纤放大器中的应用

The Application of Equalization Filter Made by Long Period Grating in Fiber Amplifier

对具有大层间距的累托石-尼龙夹层复合材料和具有长周期有序排列的脂质材料等进行了小角度X射线衍射分析。

Rectorite-nylon sandwich composites with large layer-spacing and lipid materials with long-period ordered structure were studied by small angle X-ray diffractometry .

C5含量偏高易产生设备堵塞、产品质量不合格等问题，影响装置的长周期稳定运行。

Higher content of C_5 could cause a lot of problems such as blockage of equipment and disqualification of product which would affect long period operation of the unit .

长周期L、无定形区厚度A以及晶区厚度C均随PBT含量的增加而减小。

Long spacing , crystallize core thickness and amorphous thickness decrease with increasing PBT .

Ni3（B，Si）相具有长周期结构。

The microdiffraction pattern revealed a long periodicity of Ni 3 ( B , Si ) .

本文通过在计算机上对加工系统长周期误差Δe、ΔR、Δr的计算，分析了它们影响齿形精度的规律性；

The regularity of impairing gearing shape-precision has been analysed through the calculation of systematic errors △ de , △ dR , △ r by using computer .

采取燃气脉冲吹灰技术等有针对性的措施，较好地解决了这一难题，保证了CO锅炉长周期生产。

An ash blowing technology of combustion gas and pulse is used to solve this problem , which ensures CO boiler having a long term operation .

但是Bragg法的长周期与相关函数法的长周期代表的范围不同。

However , the Bragg spacing and the correlation function long period represent different regions of the non homogeneous area .

提出了一种利用高频脉冲CO2激光对称烧写长周期光纤光栅（LPEGs）的方法。

A novel azimuthally symmetric writing method for long period fiber gratings ( LPFGs ) fabrication with high frequency pulsed CO_2 laser was presented .

通过拟合15°&30°内的长周期P波走时及波形资料，得到了华南地区上地幔P波速度结构模型SC。

The waveforms and travel times of long period P phase in the upper mantle range 15 ° - 30 ° have been used to derive upper mantle P velocity structure SC of the Southern China .

长周期光纤光栅光谱控制及其在EDFA增益平坦中的应用

Control of LPG ′ s Spectral Structure and Its Application in EDFA Gain - flattening Equalizer

长周期掺杂超晶格GaAs/AlxGa（1-x）As红外吸收的研究

Infrared Absorption of Long Period Doping Superlattice-GaAs / Al_xGa_ ( 1-x ) As

报道了一种用高频CO2激光脉冲在普通通信光纤包层边缘单侧写入的新型长周期光纤光栅。

A novel long-period fiber grating ( LPFG ) is fabricated in common communication optical fiber by using a edge-written exposure method with high-frequency CO2 laser pulses .

MEMS工艺使长周期光栅振幅掩模版的制作变得简单、灵活、且精度高。

The Amplitude mask of LPFGs will bear the advantage of easy to be made , high precision and good agility if fabricated by MEMS technique .

计算结果表明，海温异常的随机效应是一个长周期过程，时间尺度约为140天，可以用实际测得的拖曳系数CD和海温起伏方差q~2值对它进行预测。

Calculations indicate that the measured drag coefficient CD and the OSTF variance q2 can be used to predict the stochastic effect of anomalous ocean surface temperature , which has duration of the order of 140 days .

直接使用FFT由数字地震记录来恢复地面位移可能产生包括虚假的长周期分量在内的不正确结果。

It is possible to yield incorrect results including false long period components , during the restitution of the ground displacement from digital seismograms directly using FFT .

利用啁啾光纤Bragg光栅（FBG）反射和长周期FBG边沿滤波，提出并实现了一种综合的FBG传感快速解调方案。

Based on the chirp fiber Bragg grating ( FBG ) and edge filter technique , a high-speed sensor multiplexing network system is designed and realized .

基于F-P光滤波器的可调谐光纤激光器研究长周期波导光栅窄带光滤波器特性的模拟

Tunable Fiber Laser Bassed on Fabry-Perot Filter ; Property Simulation of a Narrow Band-passed Optical Filter Based on Long-period Waveguide Grating

结果表明，SLR确定的长周期潮汐解已能检测到地幔滞弹性的影响。

The results show that the long_period tide solutions determined by SLR can detect the effect of mantle anelasticity .

此外，光纤光栅，尤其是长周期光纤光栅（LPG）还对外界折射率的变化很敏感。

Fiber gratings , especially long-period gratings ( LPGs ) are sensitive to the change of external refractive index ( ERI ), which can be used as refractometers .

1985年8月23日新疆乌恰地震的长周期震源参数&用IDA台网记录反演的结果

Long period source parameters of the wuqia , Xinjiang earthquake of August 23,1985 & results from inversion of the records of the IDA network

按我们的观测，变星V879Sco不是一颗类似Tori的星云变星，而是长周期变星。

According to our observation the variable star V 879 Sco is a long period variable star .

长周期的实验结果表明，在可持续通量的范围内，加入MPE轻微改善膜污染。

Long-term experiments results show , below the " sustainable flux ", the membrane performance of MBR with MPE is slightly improved .

选取有限长周期栅格的中间部分作为无限周期栅格中的一部分进行研究，能够很好地满足COM模型的周期性前提假设。

The cells in the middle part of the periodic grating of finite length regarded as within an infinite periodic structure are investigated , which could well satisfy the periodicity presupposition of the COM model .