Because the mold is formed around a one-piece pattern (which does not have to be pulled out from the mold as in a traditional sand casting process), very intricate parts and undercuts can be made.

由于这种铸型是环绕整块型模形成的(无需像传统的砂型铸造工艺那样拔模)，能制作十分复杂的零件和浮雕。

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The gait and footprint distribution of a camel walking on sand, the regular changing pattern of motion parameters with the changing of walking speed and the slope Angle were studied.

研究了骆驼坡道行走的运动步法、足印分布，以及骆驼运动参数随速度、坡度的变化规律。

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The dynamic pressure on pattern wall can reflect indirectly the compaction degree of sand during the course of filling and compaction of sand on EPC.

消失模铸造干砂充填紧实过程中，干砂对模型壁的动态压力可间接反映此处干砂的紧实程度。

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He tracked the muggers' footprints on sand dunes over the course of several weeks, to get data for the maps, and established a pattern that helped police predict the attacks, so that they could lie in wait.

ECONOMIST: A new device puts an old skill to work