Laser spot welding will take the place of the traditional joining methods such as resistance welding and rivet connection for its high precision and high efficiency.

激光点焊具有高精度，高效率等特点，在航空航天工业中有望替代传统的电阻点焊和铆接等连接方法。

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So the circumjacent welding should be applied at this spot and another join symmetrical to it, all sides of the place at which Angle iron join are welded around with the main beam.

因此应该在该位置以及与之对称的另一联接点处都应采用周边焊，使角钢连接处的各边全部焊接，然后再与大梁周边焊接。

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So the circumjacent welding should be applied at this spot and another join symmetrical to it, all sides of the place at which Angle iron join are welded around with the main beam.

因此应该在该位置以及与之对称的另一联接点处都应采用周边焊，使角钢连接处的各边全部焊接，然后再与大梁周边焊接。

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