//===
resistance, conductance: conductance = 1/resistance for "pure resistor"(passive load).
capacitance, inductance
capacitor, inductor
capacitive, inductive
//===
impedance = resistance + j*reactance
Z= R + jX
阻抗= 電阻 + 電抗
admittance= conductance + j*susceptance
Y= G + jB
導納= 電導 + 電納
"The phase of the complex impedance is the phase shift by which the current is ahead of the voltage."
[ref]
http://en.wikipedia.org/wiki/Electrical_impedance
http://en.wikipedia.org/wiki/Electrical_conductance
http://en.wikipedia.org/wiki/Capacitance
http://en.wikipedia.org/wiki/Inductance
http://zh.wikipedia.org/wiki/%E7%94%B5%E6%8A%97
http://en.wikipedia.org/wiki/Capacitive_reactance
Disclaimer
dawn sky
BBC 6 Minute English
2009年9月30日 星期三
2009年9月7日 星期一
steal , stolen 的用法
I was stolen NT$100 by a thief.
A thief stole NT$100 from me. --> steal sth from sb.
A robber robbed me of NT$100. --> rob sb of sth
我家被偷了 該怎麼講呢?
xxx My house was stolen xxx --> it's impossibe to steal a house
A thief ran into my house yesterday and stole NT$500.
A theft happened to my house yesterday???
//===
steal a base : 盜壘
A robber robbed me of NT$100. --> rob sb of sth
我家被偷了 該怎麼講呢?
xxx My house was stolen xxx --> it's impossibe to steal a house
A thief ran into my house yesterday and stole NT$500.
A theft happened to my house yesterday???
//===
steal a base : 盜壘
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