welding thermal circulation
美 [ˈweldɪŋ ˈθɜːrml ˌsɜːrkjəˈleɪʃn]英 [ˈweldɪŋ ˈθɜːml ˌsɜːkjəˈleɪʃn]
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welfare economics
Welfare Management
Welfare of the disabled
welfare state system
well completion
well flushing
well water
Welland Canal
Wellesley
well-formed formula
welding stress and distortion
welding shop
Welding rod
welding quality
Welding procedure
welding operation
Welding materials
Welding mark
welding head
Welding Equipment