然而，即使1980年排除通货膨胀因素的中产阶级家庭净收入要高于1976年，天然气管道爆炸事件[注1]和两位数的通货膨胀还是让人们感觉不是那么回事。
Median household income, adjusted for inflation, was higher in 1980 than it had been in 1976. But gas lines and double-digit inflation made people feel that things were falling apart.
敷设的天然气管道表面除做防腐层外还需加入阴极保护，以延缓腐蚀速度。
NG pipeline needs to be covered with anti-corrosion layer and plus cathode protect, to delay its corrosion.
敷设的天然气管道表面除做防腐层外还需加入阴极保护，以延缓腐蚀速度。
NG pipeline needs to be covered with anti-corrosion layer and plus cathode protect, to delay its corrosion.
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