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，
允许有永久焊接的支撑杆、熔化性嵌条和可熔嵌环。
词条纠错
X
费品;耗品声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其
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