Cultivation with open ground
embankment with open crushed-stone side-slope
full open with retroaction
rigid-frame arch with open spandrel
(pressure)gauge with back connection
Covering with back shading net
Liquid-phase microextraction with back extraction
One-side welding with back formation
segment with back steel
single-welded butt joint with back
conbination press with 4 rolls 3 flips
Mechanical press with multi-station
new spacer with press bar