It is an efficient obstacle to material exchange and avoids the skin's drying out.
它是物质交换的有效阻隔并防止皮肤干燥。
Between the reservoir system and the external environment the constant material exchange makes the dynamic reservoir system more complex.
油藏系统与外界不断地进行物质交换，造成油藏动态系统更加复杂化。
The gas flow and the liquid complete the energy exchange and the material exchange between gas phase and liquid phase in the flowing process.
气流和液体在流动的过程中完成气相与液相之间的能量交换与物质交换。
The Drum Pump offers a simplified material exchange, prevents sealant loss due to leaking and helps to maintain a clean workplace.
转子泵提供了简化的物质交换，防止了由于泄露而造成的密封剂损失，有助于保持清洁的工作环境。
The Drum Pump offers a simplified material exchange, prevents sealant loss due to leaking and helps to maintain a clean workplace.
转子泵提供了简化的物质交换，防止了由于泄露而造成的密封剂损失，有助于保持清洁的工作环境。
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