hub and spigot 中文意思是什麼
hub and spigot
解釋
套節及套管-
Standard test method for gaskets for use in connection with hub and spigot cast iron soil pipe and fittings for sanitary drain, waste, vent, and storm piping applications
衛生排水廢棄物通風和暴雨管設施用與襯套窩接式鑄鐵污水管和配件相連接用墊圈的標準試驗方法
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