fiber material dispertion with different dopping
标签： dispertion different material dopping
上传时间： 2014-11-28
上传用户：cursor
Useful material for ANSYS beginners.
标签： beginners material Useful ANSYS
上传时间： 2017-09-09
上传用户：
mobile station training material
标签： material training station mobile
上传时间： 2017-09-09
上传用户：gououo
物资管理系统material Management System
标签： Management material System 管理系统
上传时间： 2017-09-26
上传用户：dsgkjgkjg
·详细说明：Procyon方案(手工制作的MP3播放器电路及资料)-procyon plan, hand-planted MP3 player electric circuit and material 文件列表: procyon方案 ...........\Code ...........\....\ata_if.c ...........\
上传时间： 2013-05-21
上传用户：qweqweqwe
·详细说明：USB体系结构,是学习USB的好帮手,让你全面了解USB的好资料,是翻译国外的书-USB system structure, is the good helper which studies USB, lets you comprehensively understand USB the good material, is the translation overseas book国际著
标签： USB
上传时间： 2013-06-30
上传用户：ndyyliu
cadence material includes caden_layout,CADENCE_20Manual,cs5710-layout1x2 and manual
上传时间： 2013-09-10
上传用户：kao21
Sensors for pressure, load, temperature, acceleration andmany other physical quantities often take the form of aWheatstone bridge. These sensors can be extremely linearand stable over time and temperature. However, mostthings in nature are only linear if you don’t bend them toomuch. In the case of a load cell, Hooke’s law states that thestrain in a material is proportional to the applied stress—as long as the stress is nowhere near the material’s yieldpoint (the “point of no return” where the material ispermanently deformed).
上传时间： 2013-11-13
上传用户：墙角有棵树
Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to the nature of the substrate material. This needs to be considered as a layered structure of epoxy resinand glass fibre. Calculations, using Boundary Element field methods, show that the distribution of the electricfield within this layered structure determines the apparent dielectric constant and therefore affects theimpedance. Thus FR4 cannot be considered to be uniform dielectric when calculating differential impedance.
上传时间： 2014-12-24
上传用户：DE2542
A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the semiconductor material used, and can benear-ultraviolet, visible or infrared. LEDs are more prevalent today than ever before, replacing traditional incandescent andfluorescent bulbs in many lighting applications. Incandescents use a heated filament, are subject to breakage and burnoutand operate at a luminous efficiency of 2% to 4%. Fluorescents are more efficient, at 7% to 12%, but require highdrive voltage and contain mercury, a toxic substance that may be eventually banned in certain countries. LEDs, however,produce light directly through electroluminescence, operate at low voltage and can deliver over 20% luminous efficiency.
上传时间： 2013-11-07
上传用户：xiaoyuer
