Reducing the mechanism. In the process of melting, the volume of the steel will slow down and the volume will increase as it increases, resulting in a large plane. When the 'keyhole' is produced, it is a bright red circle on a narrow hole - laser pointer. The barrel is open to create a pool. When the water is wet, it will combine two pieces of paper.
The main reason for many device interruptions is the end of the spot and weld, since the weld is in the opposite direction. If the connection is incorrect, it will ultimately cause stress to be too high. "The effect of supporting the negative can cause the stress of welding conditions, which make you feel better, part of the engagement or activation, causing the weaker bond.
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