- ellipse (or elliptical) valve diagram
- elliptical valve diagram
- 椭圆形: oval; elliptocytosis; ellips ...
- 阀动: valve actuation; valve motio ...
- 图: picture; chart; drawing; map
- 阀动图: distribution diagram; valve diagram
- 椭圆形: oval; elliptocytosis; ellipse
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