1.A system which indubitably resolves the isolation between intranet and extranet and exchanging data was not found by research.
经调查,还没有发现真解决内网和外网间隔离和数交换方案系统。
2.Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.