double u groove
相关英语词汇推荐
- blind riser
- tinplate mill
- waist
- drawn in scale
- filling
- cathode efficiency
- annealing ore
- congruent melting point
- laminate composite
- Radiation damage to the crystal
- aluminizing
- arc welding with consumable
- stiffener
- scaffold bridging
- shot well
- flash plating
- superduty silica brick
- vacuum(-pan) evaporator
- cement pattern
- residual magnetism