不过昨天晚上试验用的“新锁”则是由北方交通大学研发的一种专利产品。

The new lock tried in use that night was a patented product developed by the Northern Jiaotong University,.

youdao

不过昨天晚上试验用的“新锁”则是由北方交通大学研发的一种专利产品。

The new lock tried in use that night was a patented product developed by the Northern Jiaotong University,.

youdao