Method: SD rats 30, which were divided into the fast decompression group, HBO exposure group and normal control group.
方法：SD大鼠30只，随机分为快速减压组、高压氧暴露组和正常对照组。
Because flame stability control is the key to assure process quality, the two-step decompression method is used to control the flow of flame gas.
因火焰稳定性控制是保证该工艺质量的关键，所以采用二级减压方法对火焰气体流量进行控制。
Due to using a special shift counter to simplify the control circuit, the decompression circuit can be implemented easily and the hardware cost is low.
解压时，通过使用一种特殊的计数器简化控制电路，解压电路硬件开销小且较易实现。
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