男人的天堂亚洲AV无码,久久久久精品国产亚洲AV电影,欧美孕妇乳喷奶水在线观看,日本中文字幕亚洲乱码,无码国模国产在线观看免费,在线精品视频一区二区三四,无人区码一码二码高高,AV最新高清无码专区,51无人区码一码二码三码区别,高清一卡二卡三卡四免费

  • <cite id="0q0oe"></cite>
  • <code id="0q0oe"><tr id="0q0oe"></tr></code>
    <strike id="0q0oe"></strike>
  • <li id="0q0oe"></li>
    <button id="0q0oe"><input id="0q0oe"></input></button>
  • <cite id="0q0oe"></cite>
    <cite id="0q0oe"><samp id="0q0oe"></samp></cite>
  • <code id="0q0oe"></code>
    <button id="0q0oe"><tbody id="0q0oe"></tbody></button>
    <li id="0q0oe"></li>

    Knowledge of magnetism

    1.Magnetic Field: the space that can produce magnetic force to magnetic pole.

    2.Magnetic Field Intensity: (H) magnetic field electrical which was produced by electrical gyroidal winding.Namely,if the unitage length of electrical gyroidal winding is “n” and the passing electric current is “I(A)” then H=I*n.

    3.Flux Density (B): the product of vacuum magnetoconductivity (μ)and intensity of magnetic B=μ*H

    4.Flux: flux density of unitage area ∮=B*S(“S” is unitage area)

    5.Max Energy Product (BH(max)): smallest volume exists most large magnetic power.

    6.Coercive Force (Hcb): magnetic field intensity which realize to change the magnetic direction opposite to earlier direction.Namely, if the process is controlled by remove magnetic domain then the power that resist this process called Coercive Force.

    7.Residual .Flux Density(Br): magnetic induction intensity(Flux Density) when saturated magnet (including magnetic field which demagnetized by itself)decrease monotonously according to saturated hysteresis curves to zero.

    8.Sreface Magnetic Field: appointed palce on permanent magnet.

    9.Anisotropic magnet:different crystal has easy or difficult magnetic direction characteristic it attribute to the direction of crystal component.

    Mainly magnetics unitage and physical unitage chart

    Physical name and notationSI unitConversion formualCGS Gauss systemIA1A=3*10esu VmA1A= GillbertGillbertRm1A/wb=1emuH1A/M=OeBT1T=GSCM∮Mx

    *esu is static unitage units *emu is electromagnetic unitage units


    99在线精品一区二区三区| 久久精品国产亚洲沈樵| 天堂网中文在线www| 禁色av一区二区三区| 国自产在线精品一本无码中文| 成免费CRM直接看| 亚洲AV无码一区东京热| 在线观看无码不卡AV中文| 天天爱天天做久久狼狼| 亚洲av成人影院在线观看| 免费无码又黄又爽又刺激| 国产精品一区二区三区99性 | 久久国产精品99国产精| 日韩色在线精品视频观看| 10000部拍拍拍免费视频| 人妻少妇 在线视频| 国产人碰人摸人爱免费视频| 日本一区 二区 电影| 亚洲欧美偷拍另类A∨| 久久精品视频| 激情影视乱码av| 人人添人人澡人人澡人人人人| 欧美日韩一区二区三区视频播放| 久久精品国产亚洲av麻豆花絮| 男人J放进女人J无遮挡免费看| 国产无遮挡A片又黄又爽漫画| 最新在线精品国自产拍视频| 国产白丝精品91爽爽久久| 粉色av一区二区三区| 好大好深好猛好爽视频| 国产又色又爽又黄的免费软件| 亚洲精品久久久久午夜福利| 日本熟妇色XXXXX日本免费看| 国产成人精品日本亚洲一区天天| 成人免费av片在线观看| 午夜福利精品亚洲不卡| 日韩综合无码一区二区| 日韩av毛片在线观看| 亚洲美女一区二区三区av在线| 国产精品美女久久久久久麻豆 | 成人亚洲精品777777|