本发明公开了一种压差式自动关闭阀，该阀包括阀体、通端盖、阀芯球、弹簧座、弹簧、进口端、出口端；
The invention discloses a different-pressure automatic shuttle valve, comprising valve body, through end cover, valve core ball, spring seat, spring, inlet end, outlet port .
测试控制程序逐一向相关端口线芯加电，并判断通断或绝缘，直至结束。
The test control programmer imposed the test signals to judge the on-of or isolation till the end of programmer.
设计了一种特殊结构的铝合金薄圆盘压铸模，论述了模具结构特点和工作原理。该模具采用中心浇道，形成铸件通孔的型芯兼作分流锥。
The die casting die with special structure for aluminum alloy thin disk was designed, and the structure features and operating principle of the die were described.
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