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
的书面批准，
允许有永久焊接的支撑杆、熔化性嵌条和可熔嵌环。
7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.
事先没有赛的书面批准，允许有永久焊接的支撑杆、熔化性嵌条和可熔嵌环。
声明：以上例句、词性分类均由互联网资源自动
，
分未经过人工审核，其表达内容亦
代表本软件的观点；若发现问题，欢迎向我们指正。
