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乙烯装置及主要单元设备均需在一定范围的操作条件下安全、稳定地运转。当在某些因素影响下不能保证装置或单元设备的安全操作时,则必须紧急停车,以保装置和单元设备的安全。
Ethylene plant and the main unit equipment are required to operate safely and stably under a certain range of operating conditions. When certain factors can not guarantee the safe operation of the device or unit equipment, you must emergency stop to protect the safety of the device and unit equipment.