r值〔绝缘材料阻挡热流的阻力计算单位〕。的英文

r-value

• r:     r ＝ 1.refrig ...
• 值:    price; value
• 绝缘材料:    electrical insulat ...
• 阻挡:    stop; stem; resist ...
• 热流:    warm current
• 的:    4次方是 The fourth po ...
• 阻力:    obstruction; resis ...
• 计算:    count; compute; ca ...
• 单位:    unit