中国机电产品进出口商会
China Chamber of Commerce for Import and Export of Machinery and Electronic Products
水产品出口
export of aquatic products
Export Trade of aquatic products
水产品出口贸易风险预警模型
Early-warning model for aquatic products export tr
多进出水口流场
multi-inlet and multi-outlet flow field
盖板竖井式进/出水口
vertical pipe intake with plate
江苏省五金矿产进出口公司
Import and Export Corperation of Metals and Minerals of Jiangsu
竖井式进出水口
vertical pipe inlet-outlet
钨品进出口
import and export of tungsten products