shut-off block 开关组
Product notes: We are developing a double block and bleed design seating arrangement for applications which require verifiable positive shut off.
产品说明：我们正在开发双重阻塞和排放结构的阀座排列设计，用于要求能够证明确实关断的应用环境。
No rooms connect with this outer shell and no rooms block or shut off the view over the city.
任何房间与外壳均不相连，为观赏城市风景提供了毫无障碍的视野。
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