合同保证体系
contract guarantee system
施工质量保证体系
construction quality guarantee system
质量保证体系
Quality assurance system
quality guarantee system
quality assurance systems
quality management system
quality certification system
quality ensurance system
quality control system
training quality assurance system
QAS
quality system
quality assurance sys tem
quality-assurance system
quality-guarantee system
质量保证体系构建
construction of quality system
保证保险合同
guarantee insurance contract
抵押保证证券
CMO (collateralized mortgage obligation
职工保证保险
fidelity guarantee insurance
CO2气体保护单面焊
KeywordCO2 gas shielding one-side welding
CO2 one-side welding