我们的压缩机产品有油、气、电等多种动力驱动方式，压缩气体介质也包括空气、氮气和天然气。
The compressors can be driven by various methods such as petroleum, gas and electricity and set for multi-kinds of compressed media, such as air, nitrogen and natural gas.
采用动力文克尔地基梁模型，推导了层状介质中桩单元的形函数矩阵和单元刚度矩阵。
The shape function matrices and the element stiffness matrices of the pile elements in layered media are derived by adopting the Beam - On - Dynamic - Winkler - Foundation model.
大气介质中化学污染物的物理、化学行为具有外源强迫和耗散性等非线性动力学特征。
The characters of chemical pollutants' physical and chemical fate in the media of atmosphere include forcing, dissipation, and non-linearity.
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