认证标志的英文：
authentication mark; certification mark

参考例句：

Unify the existing certification marks, i. e., the "CCIB" mark and the "Great Wall" mark into a new certification mark.
统一现有认证标志，即"CCIB"标志和“长城”标志，形成一个新的认证标志。

All Bradford White commercial electric water heaters are listed by Underwriters Laboratories and bear the UL label.
所有美国百来福商用电热水器均通过美国UL安全认证,具有美国UL认证标志。

authentication是什么意思：
n. 证明；鉴定

authentically ad.
确实地；真正地

Being authentically or genuinely such by birth.
纯种的出身纯正或血统纯净的

To substantiate or authenticate with evidence.
证实用证据证明为真

mark是什么意思：
n. 符号；记号；分数，成绩；污点；迹象
v. 做记号；做标记；表明方位；标志；庆祝

Marking: Every package shall be marked with “SM” in diamond and marked the package number.
麦头每件包装应刷上菱形图案内有二字,并应刷上件号

impress a mark on [ upon ] a surface=impress a surface with a mark
在表面上打记号

To mark or mottle with spots.
有斑点，成斑驳用点作标记或使斑驳杂色

certification是什么意思：
n. 证明，鉴定，证书

gold certificate
金币流通券|金券|金证券

scrap certificate
车辆拆毁证明书

A certificated lawyer.
合格的律师。