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.
所有的浇注口和任何其它暴露在内部凝结或重度污染的部件需要涂层。
Pouring all I and any other exposed internal condensation, or heavily polluted parts of the coating required.
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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