为了避免发动机过早的磨损(非正常)和保持最佳的工作状态，对空气滤清器和压力调节阀pcv进行定期的检查和更换便显得至关重要了。
In order to avoid premature wear engine (abnormal) and maintain the best working condition, the air filter and pressure regulator PCV regular inspection and replacement is crucial.
结果表明：在正常生活状态下，中华鳖主要依靠空气呼吸摄氧；水呼吸仅占总呼吸摄氧量的2.68%左右。
The results showed that, the soft-shelled turtle depended mainly on aerial respiration, aquatic oxygen consumption was only 2.68% of total oxygen consumption.
结果表明：在正常生活状态下，中华鳖主要依靠空气呼吸摄氧；水呼吸仅占总呼吸摄氧量的2.68%左右。
The results showed that, the soft-shelled turtle depended mainly on aerial respiration, aquatic oxygen consumption was only 2.68% of total oxygen consumption.
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