A surveillance audit is carried out once a year within the three-year validity period and recertification audit will be conducted at the expiry of the three-year period.
三年有效期内每年进行一次监督
，三年到期进行再认证。
A surveillance audit is carried out once a year within the three-year validity period and recertification audit will be conducted at the expiry of the three-year period.
三年有效期内每年进行一次监督，三年到期进行再认证。
声明：以上例
、词性分类均由互联网资源自动生成，部分未经过
，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
