special seal;
例句:
The report is not made valid without the test seal or official seal.
本报告无检验单位的检验专用章或公章无效.
At the same the corresponding level of practice issued by Seal.
同时颁发相应级别的执业专用章.
I want to apply for carving a special invoice stamp.
我要申请雕刻发票专用章.