国外的空气冲击造型机所使用的冲击阀，主要有圆盘阀及栅格阀两种，其各有特点。
On abroad, impact valves incorporated in air impact molding machine are mainly disc valve and grid valve. Each of these has its own characteristic.
采用气冲造型机并在型砂顶部覆盖铝板的方法，获得了气力冲击造型试验紧实过程中型砂内部的动态应力。
The dynamic stress inside green sand during experimental compaction by air impact moulding can be achieved using a method of placing aluminium plate at the top of green sand.
采用气冲造型机并在型砂顶部覆盖铝板的方法，获得了气力冲击造型试验紧实过程中型砂内部的动态应力。
The dynamic stress inside green sand during experimental compaction by air impact moulding can be achieved using a method of placing aluminium plate at the top of green sand.
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