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一个哈龙(一种液化气体灭火介质)消防保护系统正在接受检查。作为系统检查的一部分,两名雇员正在搬动哈龙气瓶到一个便携式的称重仪上去称重。
A halon (a liquefied gas extinguishing medium) fire protection system is under inspection. As part of the system check, two employees were moving a halon cylinder to a portable weighing scale for weighing.