... low power dc wet-type electromagnet for valve 低功率直流湿式阀用电磁铁 lower valve 下方值 main relay valve 主继电器控制管 ...
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lower valve spring collar 气门弹簧下环
Upper and lower valve body 上下阀体
lower valve seat 下阀座
lower valve body 下阀体
lower adjusting valve 下端调整阀
lower adjusting valve port 调整阀下口
main valve lower piston 主阀下活塞
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