大师作文网vibration welding什么意思
micro-welding什么意思
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vibration
Can you recognize the welding way from the drawing什么意思
物理上两个英文单词oscillation和vibration有什么区别?
welding horn
SP welding
the ride vibration是什么意思
The secret is --vibration.
问 welding,brazing and soldering 这三个词解释为焊接 有什么区别?
welding qualification是什么意思