It is a difficult problem to improve the lowtemperaturetoughness of high cellulosic electrodes.
提高高纤维素型焊条低温韧性是未能解决好的一大难题。
2
The lowtemperaturetoughness of lowtemperature steel can be improved effectively by means of adjusting alloy ingredients and modifying heat-treatment regime.
通过调整合金成份和改变热处理制度试验,有效地提高了低温钢的低温韧性。
3
High strength, toughness, weldability and lowtemperaturetoughness is also widely used in the manufacture of Bridges, boilers, ships and other large structures.