霍尔效应

A method for the generation of Weierstrass fractal surface is presented,based on Helmholtz equation,with the Kirchhoff approximation,the calculus formula of light scattered field on the 1-D Weierstrass fractal suface is deduced.

采用Weierstrass分形函数模拟实际粗糙表面，从简谐光波满足的亥姆荷兹方程出发，利用基尔霍夫近似推导出一维Weierstrass分形粗糙表面的光散射场的积分公式，考虑遮蔽效应后数值计算并分析了表面散射光强的角分布特性。

Therefore, this new phenomenon has been investigated carefully and the attenuation of sound wave was analysed.

因此，对海尔姆霍兹共振器的声学整流效应进行了较深入的研究，并且分析了产生这种新的声学整流效应现象的声波衰减机制。

P_type semiconductor ; galvanomagnetic effect ; Hall coefficient extremum ; extremum factor

p型半导体；磁电效应；霍尔系数极值；极值因数

Magnetic field curve distortion is found at the position of magnetic pole edge in Hall effect experiment, using HL-5 Hall effect testing instrument.

在利用HL-5霍尔效应测试仪测量磁场的实验中，发现有些仪器的测量曲线在磁极边缘附近存在畸变。

The device consists of a single-shot molded plastic package that includes a samarium cobalt pellet, a pole piece, and a Hall effect IC that has been optimized to the magnetic circuit.

该装置由一个单杆模压塑料封装，包括一个钐钴颗粒，一极片和霍尔效应集成电路已优化的磁路。

Moreover, the merging into these quantum Hall states with decreasing temperature appears to deviate from a semicircle relation. This could be due to the fact that the presence of inelastic scatterings (electron-phonon, electron-electron, etc.) is known to affect the localization effect.

此外，随著温度降低，分析结果显出温度流线并入量子霍尔态的行为偏离了预期的半圆关系，此可能由於非弹性散射(电子-声子、电子-电子等)的存在对局域效应造成影响。

Based on the spectral model of Elfouhaily, the scattering coefficient of sea surface is calculated, and the theoretical results are compared with the experimental data and Kirchhoff approximation with or without shadowing effect considered.

基于Elfouhaily海谱模型，计算了海面的散射系数，将得到的理论计算结果和实验数据及考虑和不考虑遮蔽效应的基尔霍夫近似结果进行了对比。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。