用两相质子系统模型研究了非均相分子筛中的交叉弛豫效应。
The effects of cross-relaxation are investigated by treating a heterogeneous zeolite system as a two-phase proton system.
含煤系统在时间上可以分为物质来源子系统、物质堆积子系统、埋藏变质子系统。
A coal system can be divided into substance source subsystem, accumulation subsystem and metamorphism system in temporal range.
该文分析了车用质子交换膜燃料电池系统热管理子系统的结构，并建立热管理子系统的动态模型。
A dynamic model was developed to analyze the thermal management subsystem of a proton exchange membrane (PEM) fuel cell system.
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