Soft start valves are used to throttle the gas flow in roughing lines. They prevent turbulences in piping and containers, particulate contamination in vacuum installations.
软启动阀适用于在粗加工过程中调节燃气气流，能防止管道和容器中的气体动荡、真空装置的微粒污染等。
The main causes of fever reaction due to intravenous transfusion include pyrogen reaction, particulate contamination, bacteria and virus contamination, and side effect of drugs.
热原反应、微粒污染、细菌病毒污染、药物不良反应是引起静脉输液发热反应的主要原因。
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