房子四壁一旦支起来, 就把顶篷放下来安好.Once the walls of the room are up, let in the ceiling.四根柱子撑着顶篷.Four pillars support the ceiling.换新顶篷需要1000英镑左右.A new roof will cost round about 1000....
Seattle is fertile ground for small businesses.西雅图是适合小型企业发展的沃土。He'd gone to Seattle long after everything else in his life had changed.他生活中的其他一切都改变了，很久之后他去了西雅图。The Seattle Post - Intelligencer has become America...
A material obeying ohm's law is called an ohmic conductor or a linear conductor.凡是遵守欧姆定律的材料,都叫做欧姆导体或线性导体.The resistivity is then constant and Ohm's law is obeyed.因此电阻率也是常数,并遵循欧姆定律.standard ohm标准欧姆Hence comes th...