流动性试验部件包括浇注口、熔液腔和排气孔。

The mobility test part comprises a sprue gate, a melting liquid cavity and an exhaust hole.

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本节讨论砂型铸造工艺，包括型模、浇注口、浇道、设计考虑因素及铸造余量。

The processes of sand casting are discussed in this section, including patterns, sprues and runners, design considerations, and casting allowance.

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型砂在型模周围成形，并根据需要安放闸道、浇道、冒口、排放口和浇注杯等。

Sand is formed about the patterns, and gates, runners, risers, vents and pouring cups are added as needed.

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