On his belt, Vader wore two small system function boxes. The one on his right featured a temperature regulation system. On his left, he wore a respiratorysensor matrix.
腰带上装置有两个小型系统功能箱，右边的是温度调节系统，左边的是呼吸传感矩阵。
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This article introduces a measurement circuit for Respiratory Mechanics Parameters which is based on differential pressure sensor.