A. Ⅱ、Ⅲ B. Ⅰ、Ⅲ C. Ⅱ、Ⅲ、Ⅳ D. Ⅰ、Ⅲ、Ⅳ
A. maximum working pressure B. bursting pressure C. safety relief valve setting D. maximum temperature
A. 实体尺寸 B. 最小极限尺寸 C. 最大极限尺寸 D. 基本尺寸