The lab must work out the principle of duty, the watch must check up the power, the water pipe, the window and the door to make sure the lab is safe.
实验室应建立安全值班制度，值班人员应负责锁门、检查电源、水管、门窗等，以确保安全。
The work door has applied glass window for inspection and fixed with safety device ensures safe and reliable operation.
工作门设有玻璃检视窗，配有安全装置，确保操作安全可靠。
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