Cast iron heat exchange tube with inner corrugation and outer fins
内螺纹外肋片铸铁换热管
地铁环控计算机模拟软件(SES)
Aluminum Heat Exchange Tube
outer anchor inner grunt
outer (inner) surface layer for protection of composite glassfibre air duct
novel combined inner and outer agitators
inner outer regular sets
inner and outer secondary air damper
inner and outer packing
Inner and outer environment
inner and outer contour distinguishing