Adjustable "Crater" control - Gives the operator control over welding conditions at the start and end of welds for improved weld quality.

可连续调节的收弧控制——在任何焊接条件下收弧均能获得高质量的焊缝。

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A robot may consist of one arm that can spot weld automobile frames; or it might be a pack mule that can carry heavy gear over difficult terrain. 4.

机器人可能只有一只点焊手机框架的手；或者可能是一头在复杂地形中托运东西的电驴。

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The etched section also reveals that multiple weld passes were made over the top of the original submerged arc weld pass.

从酸蚀断面还可以看出：在原自动埋弧焊的上面覆盖有多层焊道。

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"I believe the real state of our state will be measured by the state of our schools, " said Massachusetts Gov. Paul Cellucci, who is running for his first full term since taking over for former Gov. William Weld.

CNN