This paper introduces the gas reserves in Sihe Coal Mine, and expounds the gas odorizing equipment from aspects of the selection and allocation of equipment, process flow, and equipment features, etc.

介绍了寺河矿的瓦斯储量，从加臭装置的设备选择及配置、工艺流程和设备的特点等方面阐述了瓦斯加臭方案。

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But the behavior of rats in the odorized box wasn't significantly different in either group, suggesting the familiar scents left by the odorizing rat suppressed conditioned fear responses, researchers said.

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