common mechanical seal普通机械密封
cachet common seal公章
Phoca uitulina common seal斑海豹
Eastern Atlantic Common Seal港海豹
common speed mechanical seal一般速度机械密封
common temperature mechanical seal普温机械密封
a common seal法团印章
Common seal required for organizations单位客户盖公章
Corporate chop and Common Seal原子章及钢印
N（名词） the official seal of a corporate body 法人机构的公章