roof tube 中文意思是什麼
roof tube
解釋
頂棚管-
After implementation, leakages resulted from the roof tube corrosion of boilers have been effectively avoided
實施后,鍋爐頂棚管的腐蝕泄漏得到了有效遏制。 -
Overhead line private connection boxes ; disk for spacing of conductors in the roof pole stand tube
架空線路專用接線盒.屋頂電桿支架管中導線間距盤
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