7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.
事先没有赛科公司的书面批准,不允许有永久焊接的支撑杆、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.