这四只牛是实物小缩影，或者说是小模型，一次性手工造模成型，材料是一小块尼罗河粘土。
These cows are miniatures - small models, hand-moulded out of a single lump of Nile river clay.
容量最大的造模法，通过高压的作用材料从外部加热室通过铸口、流道或浇口进入闭式压膜室。
The highest volume molding method, in which the material is forced from an external heated chamber through a sprue, runner or gate into a cavity of a closed mold by means of high pressure.
本文利用人造模拟截割材料，在液压刨床和专用截割实验台上完成了单齿和滚筒截割系统的模化实验。
The paper presents the model experiments of one-pick and drum cutting systems on a hydraulic planner and a special cutting test rig with the artificial analogous cutting materials.
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