... valve outer chamber cover 阀外室盖 valve outer spring 阀外簧 valve overlap 气阀重叠; 气门叠开角; 气门重叠 ...
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... 气门弹簧valve spring 气门外弹簧valve outer spring 气门内弹簧valve inner spring ...
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... 阀装件 valve mounting 阀杆外簧 valve outer spring 阀填料压盖 valve packing gland ...
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