求翻译：上述表中的钢材级别是根据碳当量的供货平均水平而划分的，用于施工的参考。对于碳当量超标的钢材，应按表中规定的碳当量范围进行预热。一般强度钢的焊接不需要预热，但若接头拘束度大或组合厚度超过70mm时，需要预热。当一般强度钢处在特殊结构件中时，应按上表进行预热是什么意思？

The table is based on the carbon steel level equivalent average level of the supply division, for the construction of the reference. Excessive for the carbon equivalent of steel, shall be specified in the table of carbon equivalent range to warm up. Normal-strength steel welding does not require pre

The above table is based on levels of carbon steel suppliers in the average level of the Division, for the work of reference. For carbon dioxide-equivalent steel, which exceeded the standard should be set out in the table for the carbon dioxide equivalent of heat. general strength steel welded joint

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Steel level in the table above is divided according to average supply levels in carbon equivalent, for construction of the reference. For excessive carbon equivalent steels should be preheated by table provided for in the CE range. The General strength of steel welding without preheating, but if the

Steel level in above table were based supply of carbon equivalent averages are classified, reference for construction. For excessive carbon equivalent steels should be preheated by table provided for in the CE range. The General strength of steel welding without preheating, but if the joint restrain