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1·The casting powder reduces hot crack trend of magnesium aluminum alloy castings.

该保护渣减少了镁合金铸件的热裂倾向。

2·Hot crack numerical simulation has been handled by 'solidification-feeding' model based on temperature field.

本文使用基于温度场的凝固补缩模型来进行热裂纹数值模拟。

3·The main defects of laser spot welding of aluminum are crater, hot crack and porosity which created by oxide film and keyhole instability,.

焊点中存在的主要缺陷是气孔，表面下塌，热裂纹，其中气孔主要为氧化膜气孔和匙孔不稳定形成的气孔。

4·In the paper, the hot crack for the forging die made by methods of squeeze casting is analyzed, how to reduce the hot crack is also given out.

从生产实际出发，分析了锻模液态模锻成形过程中热裂纹形成的主要原因，提出了降低锻模热裂纹的几点措。

5·Because of containing more sulfur and phosphorus in the steel, and more carbon, high hardness in material of surfacing welding, the pinch roller often turns up hot crack.

夹送辊堆焊时，由于母材的硫、磷含量较高及堆焊材料含碳量高、硬度大，常常产生热裂纹。

6·The critical value of hot crack has been obtained according to the experiments on test casting, and it had been used on predicting the hot crack of bolster and side bearer.

在热裂试验的基础上，得到了铸件热裂纹倾向的临界值，进而实现了摇枕、侧架的热裂纹预测。

7·By strictly clearing up weld zone, improving welding material's purity, strengthening molten pool's shield and controlling energy input etc measures, weld zone's hot crack and blowhole were prevented.

采取严格清理焊接区、高焊材纯净度、强熔池保护及控制线能量等措施消除了蒙乃尔合金焊接中的气孔和热裂纹，保证了产品焊接质量。

8·The reasons of hot cracking susceptibility are analyzed through electronic-scanning, electronic-probing and energyspectrometric methods on the patterns of fracture surface of hot crack and base metal.

利用扫描、电子探针及能谱分析技术，从母材、热裂纹断口形貌等方面分析了8090合金热裂纹敏感性高的原因。

9·The Mother Birch had hardly spoken these words than a terrible, deafening crack shook the air, and a sharp, hot tongue of lightning landed right on her trunk.

她的话音刚落，空中响起了剧烈的、可怕的响声，闪电的火舌正中她的树干。

10·Causes the steel to produce the hot brittleness, reduces the steel the ductility and the toughness, when forging and rolling crack.

使钢产生热脆性，降低钢的延展性和韧性，在锻造和轧制时形成裂纹。