classification certificate
词语： classification certificate
解释： 船舶入级证书,船级证书,入级证书
词典： 船舶专业英汉词典
classification certificate 相关解释
classification certificate 船级证书
classification certificate 船级证书
classification certificate 船级证书
classification certificate 分类证书
classification certificate 船舶入级证书，船级证书