参照DISA工艺设计标准并结合公司以往经验，使用封闭一开放式浇注系统设计出结构复杂、高强度的QD 90缸座铸件的工艺系统。
According to the DISA technical design Standard and our experience, we use chocked-unchocked gating system to design the complex structure and high-strength technical system of QD90 Cylinder Block.
参照DISA工艺设计标准并结合公司以往经验，使用封闭一开放式浇注系统设计出结构复杂、高强度的QD 90缸座铸件的工艺系统。
According to the DISA technical design Standard and our experience, we use chocked-unchocked gating system to design the complex structure and high-strength technical system of QD90 Cylinder Block.
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