systeminfo系统信息systemn.系统；体系；身体；制度system with large inertia大惯性系统system for the protection保护机制system of linear eqations线性方程组system data address space系统数据地址空间system programming subset系统程序设计子集system of using - right使用权制度system of reduction taxes减税制System Integration Office系统综合机构system of handling a case办案制度system performance factor系统性能因数