短語(yǔ)詞組短語(yǔ)NPS Nominal Pipe Size 標(biāo)定管道尺寸nominal size pipe 標(biāo)稱管子nominal size of pipe 管材的公稱直徑Nominal size for pipe components 管道元件的公稱通徑nominal size of drill pipe [油氣]鉆桿公稱尺寸 返回 nominal pipe size