支撑杆

7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.

事先没有赛科公司书面批准，不允许有永久焊接支撑杆、熔化性嵌条和不可熔嵌环。

An intelligent clothes rack is developed with a block installed on the end of each knighthead,around which steel wire is enwind and connected to a DC motor and the clothes rail.

衣架机械分是在普拉杆式衣架两支撑杆各安装一个滑轮,再穿入钢丝绳。