作者：star123456

前文曾经说过，我因为罗技MX Master 2S鼠标滚轮橡胶老化问题，买了一个Master 3S，没有看过对比区别的朋友可以看一下

这个橡胶老化问题是MX Master 2S的通病，现在有了新鼠标，自然心中就不慌了，可以放开手对2S进行修复。修复的办法就是更换鼠标滚轮或滚轮总成，如果是滚轮价格在七八十元，寄修在九十多元，而总成价格在百元出头。

为什么我选择的是总成而不是寄修或者换滚轮呢？因为根据评价说的是，自己换滚轮虽然是送特制工具，但是还是有损坏中间轴的风险，多几十块还能多个马达备用。

话不多说，咱们开始吧。总成的外观就是这样的，是不锈钢的材质，相对原来的确实结实，根据卖家描述，这个总成的滚轮是定制，马达电机都是原装，原位无损安装。

转动时候感觉到刻度感

重量大概是27g左右

送了一套4个脚垫，原位贴好即可

开始拆鼠标之前，你需要准备螺丝刀工具，商家说是T5螺丝刀和2.0十字螺丝刀，我反正是使用了PH0和PH000两个十字批头和一个T5内六角解决的三种螺丝规格。

拆的时候比较简单，可以用吹风机或者热风枪对鼠标底部脚垫加热，比较好拆，也可以直接撕下来，反正弄下来就行了。

一共6颗螺丝需要拆下，找个盒子装上，免得丢了

拆的时候一定要切记，从鼠标的右侧，也就是不带触控板的一侧拆，稍微用力翘起来就行。

慢慢掰开，就会知道了，左侧触控板是有卡口的，如果拆这一侧会导致损坏。

打开之后，用镊子（或者指甲），将上盖与主板连接的排线取下

上盖放到一边，这时候会看到，电池固定螺丝有3颗，将其拧下来放一旁。

电池不用拆线，直接放倒到后面就行，然后就看到微动的控制板，这里一共4颗螺丝

拧下来之后，再次放倒到电池那边。露出总成的两颗螺丝

把它们拧下来，另外拔出旁边的电源线就可以摘下总成了。

总成下有个小弹簧，不要弄丢了哈，还得原位装回去呢。

到这里基本拆解就完成啦，我们对比一下拆下来的两个总成，具体是不是原装我不会看，不过，从材质手感上，除了滚轮以外确实看着不差不多。

重量上，原来的大概22g，新的在27g，主要是不锈钢轮增重。

剩下的事情就是原位装回，检查一下螺丝有没有剩下，通电之后，建议先试试鼠标各功能，再拧螺丝和贴脚垫，避免有误操作的问题。

罗技MX Master 3S的重量是140g左右，而原装的Master 2S重量在150g左右，这次改装后的整体重量在155g左右，整体觉得更加沉稳一些。

从图上看，新换的不锈钢滚轮相比3S的原装金属轮（不知道什么材质），从做工上确实差点细致程度，不过使用手感上，区别不大。

这个动作原理是罗技的MICROGEAR技术，我在装回之前也拍了一下，看着好神奇，哈哈。

装好后试用，滚轮的转动非常灵活，自动切换滚动模式没有问题，当快速滚动时，滚轮会变成无阻力的自由滚动，当缓慢滚动时，滚轮会变成有阻力的精确滚动。

整体下来百元左右，让自己的MX Master 2S满血复活，真是太开心了，唯一遗憾的是脚垫贴的有点歪，感觉有些不平。当然也可以换侧面滚轮为金属的，不过我侧边轮基本没有用过，所以老化不严重，也就没有更换。你觉得这样的解决方案如何？是否还能再战5年呢？

阅读更多鼠标精彩内容，可前往什么值得买查看

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耿饶研3059S的立方+4S的平方+6S+3=0 求S的解 -
吉段泪15380844352 ______[答案] S的立方+4S的平方+6S+3=0 s³+s² +3s²+6s+3=0 s²(s+1)+3(s+1)²=0 ∴(s+1)(s²+3s+3)=0 ∴s=-1

耿饶研3059已知tanθ=3,求√sinθ∧4 - 3sinθcosθ∧3+cosθ∧4的值 -
吉段泪15380844352 ______ tanθ=3(cosθ)^2=1/(1+(tanθ)^2)=1/10 sinθcosθ=(cosθ)^2tanθ=3/10(sinθ)^2=1-(cosθ)^2=9/10 √(sinθ)^4-3sinθcosθ^3+(cosθ)^4=(sinθ)^2-3sinθcosθ*(cosθ)^2+((cosθ)^2)^2=9/10-3*(3/10)*(1/10)+1/100=(90-9+1)/100=22/25

耿饶研3059利用MATLAB的仿真系统的传递函数和脉冲响应,用MATLAB求G(s)=(s^2+4s+2)/(s^2+3s+2) -
吉段泪15380844352 ______ 这个非常简单: s=tf('s'); G=(s^2+4*s+2)/(s^2+3*s+2); impulse(G)

耿饶研3059对于反应:3S+6KOH=2K2S+K2SO3+3H2O,下列正确的是 -
吉段泪15380844352 ______ 歧化反应.A.硫是氧化剂,KOH是还原剂 ——还原剂 氧化剂都是硫B.每3MOL硫参加反应,则反应中转移4MOL电子 ——S由0价变为K2S中-2价和K2SO3中+4价,对C.还原剂和...

耿饶研3059matlab问题:已知Y(s)=1/(s^3+2s^2+3s+1),Y(0)=0,分别用MATLAB的数值运算功能和符号运算功能求Y(1) -
吉段泪15380844352 ______ 数值方法: >> Y=@(s)1/(s^3+2*s^2+3*s+1); >> Y(1) ans = 0.1429 符号运算: syms s >> syms s>> Y=1/(s^3+2s^2+3s+1) >> subs(Y,s,1) ans = 0.1429

耿饶研3059MATLAB编程G(s)=1/s3+3s2+3s+1
吉段泪15380844352 ______ 如果s只是一个数,则 G=s^(-3)+3*s^2+3*s+1 如果s是矩阵,则 G=s.^(-3)+3*s.^2+3*s+1(加1即表示加1矩阵)

耿饶研3059设系统特征方程式为S^4+3S^3+S^2+3S+1=0试用劳斯判据判断系统的稳定性,若系统不稳定 -
吉段泪15380844352 ______ 不稳定,两个根 因为3(ε-3)/ε小于零,不稳定,第一列变号两次所以有两个根

耿饶研3059利用拉氏变换解下列微分方程或微分方程组①:y'' - 2y'+y=e^t,y(0)=y'(0)=0; ②:y''+3y'+y=3cost,y(0)=0,y'(0)=1; -
吉段泪15380844352 ______[答案] 1.s^2L-2sL+L=1/(s-1)L=1/(s-1)^3 =(1/2)*[2/(s-1)^3]y=L^(-1){(1/2)*[2/(s-1)^3]} =(1/2)L^(-1)[2!/(s-1)^3] =(1/2)(e^t)*t^2(利用L^(-1)F(s-c)=e^(ct)f(t))2.s^2L-1+3sL+L=3s/(s^2+1)L=1/(s^2+3s+1)+3s/[(s^2+1...

耿饶研3059帮我解下这个题吧:关于信号与系统的,设连续系统的系统函数的特征方程为S四次方+3S³+3S²+3S+2=0.试判断该系统是否稳定,并确定具有正实部的特... -
吉段泪15380844352 ______[答案] 用 罗斯 阵列 1 3 2 3 3 ----------------------------- 2 2 0[4] 0 2 第一列符号不变,但有全零行,说明2x^2+2=0有一对根在虚轴上=+-j; 另外2根在左半开平面;系统还是不稳定

耿饶研3059s^3+3s^2+3s+1的因式分解 -
吉段泪15380844352 ______[答案] s^3+3s^2+3s+1 =s^3+s^2+2s^2+2s+s+1 =s^2(s+1)+2s(s+1)+(s+1) =(s^2+2s+1)(s+1) =(s+1)^3