principles of metal molten welding & technique  金属熔焊原理及工艺

principles of metal welding  金属焊接原理

course design of principles of chemical industry  化工原理课程设计

course of Principles of Chemical Industry  化工原理课程

principles of metal cutting & cutters  金属切削原理及刀具

principles of metal erosion  腐蚀原理; 金属腐蚀原理

principles of metal forming  金属塑性成形原理

directed reaction of molten metal  熔体直接反应

Flow Field of Molten Metal  金属液流场

level fluctuation of molten metal  液位波动

microstructure of welding metal  焊缝组织

ultrasonic treatment of molten metal  超声熔体处理

ultrasonic welding of metal  超声波金属焊

application of principles test  原理应用测验

arc welding principles  弧焊原理

basic principles of architecture  建筑基本原则

basic principles of library  绿色荧光蛋白; 绿色荧光蛋白(GFP)

basic principles of Marxism,theoretical core  礼崩乐坏

basic principles of WTO  世贸组织原则