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).

锅构成双重防漏密封圈高压锅其特 征在于胶圈（4）中心安装了有孔金属圈（5）。

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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。

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