To probe into the application value of double tourniquet "low bottle high hang" method in establishing intravenous pathway on rescuing patients with upper gastrointestinal hemorrhea.
探讨双止血带“低瓶高调”法在抢救上消化道大出血病人建立有效静脉通道中的应用价值。
The communication system model is set up with MSK and double-pathway spread spectrum for low voltage power line.
基于该模型，研制了低压电力线的MSK双路扩谱通信电路系统。
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