常見例句雙語例句The necessity of installing the residual current fire alarm system was analyzed.分析了設(shè)置剩余電流火災(zāi)報警系統(tǒng)的必要性。Ground fault circuit interrupters (GFCI's) or residual current devices (RCD's) are required on receptacles that are located in wet locations or outdoors.在濕潤的地方或戶外作業(yè)時，插座上必須要有接地故障斷路器（GFCI） 或剩余電流裝置（RCD）。Aiming at the installation necessity of residual current fire alarm control system in building, the residual current fire alarm control system based on CAN bus was designed.針對在建筑內(nèi)安裝剩余電流火災(zāi)報警控制系統(tǒng)的必要性，設(shè)計了基于CAN總線的剩余電流火災(zāi)報警控制系統(tǒng)。權(quán)威例句What confidence can the United States have that it can effectively verify the current and residual Soviet reductions base?CENTERFORSECURITYPOLICY: Summit Watch: Tough Questions For President Bush 返回 residual current