求翻译：将4种不同焊接工艺条件下焊缝区试件的冲击韧性试样断口进行对比分析。直接焊接焊接工艺焊缝区试件的断口放射区微观形貌较为平整，具有解理断裂特征，而其他三种焊接工艺焊缝区试件的断口放射区微观形貌存在韧窝，其中焊后保温焊接工艺焊缝区试件断口放射区上韧窝数量最多，且韧窝更深，分布也更为均匀，说明焊后保温焊接工艺下材料的韧性最好，直接焊接焊接工艺下材料的韧性最差。是什么意思？

4 kinds of different welding processes under the conditions of weld specimens the impact toughness of the fracture were analyzed. Soldered directly to the welding process weld specimen fracture surface morphology of radiation zone is relatively flat, with the characteristics of cleavage fracture, wh

Will be 4 different welding process under the conditions of the weld area on sedimentological impact toughness samples for comparison and analysis. Direct soldering soldering weld area is cut out of the Panne radiation area for micro-level, more to the fracture characteristics, and other 3 welding p

4 different welding process under the condition of weld zone analysis of impact fracture toughness specimen of specimen. Directly welding welding technology weld area try pieces of fracture radiation area micro-morphology more flat, has solutions acting fracture features, and other three species wel