gravity heating main 重力泄水管
main heating system 主供暖系统
main wash heating phase 主洗加热期
main heating 主加热
main heating unit 主加热单元
LCC Main condensate heating system 主凝聚水加热系统
After numerous complaints, they constructed a heating main and brought some coal.
在不断投诉后,才建了个供热管道,并送来些煤。
The main anthropogenic source of SO2 is the burning of sulfur-containing fossil fuels for domestic heating, power generation and motor vehicles.
人为的二氧化硫主要来源是为家庭取暖、发电和机动车而燃烧含有硫磺的矿物燃料。
The main function of the horizontal skylight over the main staircase was to provide natural winter heating.
在主要楼梯上方的水平天窗的主要作用是在冬季供暖。
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