Objective to compare the ProSeal laryngeal mask airway (PLMA) and the standard laryngeal mask airway (SLMA) for intermittent positive pressure ventilation (IPPV) in a randomized auto control design.
As a convenient facility for ventilation in driving, skylight has become standard configuration of many kinds of cars made by every auto plant.
汽车天窗作为行车时换气的便利设备，已经逐渐成为各个汽车厂家生产轿车的标准配置。
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Burning type catalyzing gas sensors are the devices of the gas monitoring system in coal mines, which realizes the auto on-off of the ventilation system based on detecting the gas volume fraction.