合格证的英文：
certificate of approval

参考例句：

One (1) original and five (5) duplicate copies of ex-works quality certificate issued by the manufacturer
由生产厂家签发的质量合格证正本一份、副本五份

When a plane has passed all the tests it can get a government certificate of airworthiness
飞机经过全部试验合格后，才能获得政府颁发的飞行性能检验合格证。

certificate是什么意思：
n. 证明书；执照；凭证，单据；证券；纸币
v. 发证书给；用证书批准；用证书证明

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。

The certificate revocation list for this certificate authority that issued this site's certificate has expired.
发出此网站证书的证书权威的证书撤消列表已过期。

Here is the certificate for this Certificate Authority. Examine it carefully.
这里是此

approval是什么意思：
n. 批准；认可；赞成

The certificate is not approved for the attempted operation.
此证书不允许您执行这个操作。

The commendation that we be evaluated was approved.
对我们进行评估的建议被批准了。

The budget was narrowly approved by congress.
国会勉强通过这项预算案。

The flamen chant their approval.
祭司唱起赞歌。

The audience roared its approval.
观众们大声喊着，表示赞同。