... two-piece wedge 分半槽楔 two-pipe heating system 双管采暖系统 two-pipe hot-water heat-supply network 双管制热水热网 ...
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双管供暖系统 double pipe heating system; two pipe system; two-pipe heating system; two-pipe system 液体供暖系统 liquid heating system .
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two pipe heating system 双管供热系统
one-and-two pipe combined heating system 单双管混合式采暖系统
two pipe drop heating system 双管上分供暖系统
two pipe upfeed heating system 双管上分供暖系统
two pipe combined heating system 单双管混合式采暖系统
one-two pipe combined heating system 双管混合采暖系统
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