Valverden.巴尔韦德(位于加那；西经 17º55' 北纬 27º48')valven.瓣膜；真空管；阀门；电子管valve outer spring阀外簧valve of Vieussens维厄桑(氏)瓣, 前髓帆valve action diode二极管的阀作用valve helment mask活门头兜面具valve for pipeline管道阀门valve cover gasket阀盖垫密片valve train system配气机构valve rocker cover阀摇杆盖valve-face width气门接触面宽度valve push rod cup气门推杆球形上端

1. Flexibility compensates for seat face distortion.
   阀座面变形的柔性补偿。
2. Disc is guided by the mating surface of the seat.
   可通过所匹配的阀座表面导引阀瓣。