开合运动是地球运动的基本形式，开合构造是地质演化的基本构造。
Opening-closing is a basic form of the Earth's movement and opening-closing tectonics is a basic tectonics in geological evolution.
本文对延时侧抽芯机构设计作了详细阐述，并模拟了模具的开合运动。
The design of the side core-pulling delay mechanism is stated in detail, The open-close action of the mould is simulated.
本文对延时侧抽芯机构设计作了详细阐述，并模拟了模具的开合运动。
The design of the side core-pulling delay mechanism is stated in detail, The open-close action of the mould is simulated.
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