nonmeltn.非熔化的nonadv.[拉]非；不是non-saturated soil非饱和土Non-uniform scheme非均匀模式non-access stratum非接入层non-ion surfactant非离子表面活性剂noncontact tonometer非接触式眼压计non - rigid shafts非刚性轴noninstalment credit一次还清的信贷non-enumerable set不可数集non-surging spring防振气门弹簧non-finite clauses非限定分句