大家在查： noncrystallization communitive Hummert 姚木兰单穗景尽 ·索古 Successive Planting 美景尽斯考特·佐丹

attack pick

attack pick

attack pick

attack pick

1

Study of coal cutting mechanism of point-attack pick

镐型齿截煤机理研究

2

Study on coal break mode with point-attack pick cutting

镐齿截割煤断裂模式研究

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