The toughness may be well improved by postheat treatment which is large in energy consumption and long in working period.
焊后热处理可
较好地改善焊接接头的韧性，但存在耗能大、工时长
。
The toughness may be well improved by postheat treatment which is large in energy consumption and long in working period.
焊后热处理可较好地改善焊接接头的韧性，但存在耗能大、工时长。
：
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