Fracture energy, strength, shrinkage and expansion properties of cement mortar are studied under different moisture content and surface tension solutions.
以水泥砂浆为研究对象，对不同水分含量及不同表面张力溶液下砂浆的断裂能、强度及收缩膨胀性能进行了研究。
The rate of nomal fracture is keeped about 97% by optimizing roll gap shrinkage and strengthening management of second cooling and Fan-paragraph, according to now level of casting machine.
并根据连铸机现状水平，采取优化辊缝收缩方案、加强二冷系统和扇形段的管理，使得高强船板断口合格率稳定在97%左右。
When the shrinkage of the rod fracture surface much more than that of the cup part fracture surface, its formation by compound extrusion is not applicable.
当杆的断面收缩率比杯形部分断面收缩率大得较多时，不适合直接用复合挤压成形。
When the shrinkage of the rod fracture surface much more than that of the cup part fracture surface, its formation by compound extrusion is not applicable.
当杆的断面收缩率比杯形部分断面收缩率大得较多时，不适合直接用复合挤压成形。
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