The frame is designed to at least partially encompass a biplate when mounted in a bipolar battery, and include means to permit gas passage through the gasket.
框架设计成至少部分地包围在双极型电池组中安装的双片，并包含允许气体传输通过密封垫的装置。
2
The pressure cooker with the double leak-prevention seal ring is characterized in that the metal rim (5) is mounted in the center of the rubber gasket(4).