以下为句子列表：
英文: Abstract: In this paper, the surface of the ore milling roller was quenchedby the laser, so that increase its surface rigidity and improve its antiwear properties, and prolong its life.
中文: 文摘:应用激光束对磨辊表面进行淬火处理，提高磨辊表面硬度，增强磨辊的抗磨损性能，从而达到延寿的目的。
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英文: Comparison tests were made to the primary and secondory detonations and the same quantities of the same explosives, and found that both the surface rigidity and the depth of the induration layer have been improved obviously by the use of secondary detonat
中文: 同时对同种炸药相同药量分两次爆炸与一次爆炸的效果进行比较，发现采用二次爆炸要比一次爆炸无论表面硬度，还是硬化层深度都有明显改进。
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