roof support

短语词组

短語

• roof caving support 放頂煤支架
• sliding roof beam support 滑移頂梁支架
• light roof caving support 輕型放頂煤支架
• roof beam support 頂梁支架
• roof support pattern 頂板支護佈置方式
• powered roof support 液壓支架
• suspension roof support theory 錨杆支護理論
• hydraulic roof support 液壓支架
• continuous roof support 移動式支架
返回 roof support