spiral casing 中文意思是什麼
spiral casing
解釋
螺形-
Influence of changing temperature on reinforcing bars of spiral casing structure in a hydropower station
溫度變化對水電站蝸殼結構配筋的影響 -
Application of dth drilling with simultaneous casing in high pressure spiral jet grouting technology in pebble formation
潛孔錘跟管鉆進技術在卵石層高壓旋噴灌漿工藝中的應用
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