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- A memory system can be considered as having four ports. 可以认为一个存贮器系统有四个通路。
- To be applied to detected two port network with different dynamic impedance, its added resistance can be automatically changed by computer program. As a result, the automaticity of the measuring technique is greatly enhanced. 文中提出了简化的自动测量系统,并应用计算机技术自动地改变附加电阻,以适应不同动态阻抗的被测两端网络。
- Based on method of moment and multi port network, the radar cross section (RCS) of OSMAR2000 "Ten-five" antenna array is pre estimated over working band of airborne radar and missile radar. 摘要针对机载和弹载雷达工作的频段，基于距量法和多端口网络原理，推导出OSMAR2000系统天线阵雷达散射截面(RCS)的预估方法。
- At the end of 1998, ferry services to Macau and four ports in China were operated. 截至一九九八年底，从港澳码头开出的渡轮，可前往澳门和内地四个港口。
- The Reciprocity Theorem on The n- port Network n端口网络的互易定理
- At the end of 1998,ferry services to Macau and four ports in China were operated. 截至一九九八年底，从港澳码头开出的渡轮，可前往澳门和内地四个港口。
- electrically symmetric two port network 电对移四端网络
- It has four ports, all of which are closely integrated into the European road and rail systems. 巴塞尔有四个港口,均与欧洲公路铁路系统紧密相连。
- If reciprocity and symmetry exist for passive two port networks of linear time invariant under zero intial condition,the circuit parameters will have some important characters. 对于线性非时变的无源二端口网络，在零初始条件下，若存在互易性及对称性，则其电路参数具有一定的特殊性。
- Methods:42 patients with gallbladder diseases, LC wear performed by four ports todo the decollement of gallbladder, and to close the vessels and cysitic duct by titanium ligation. 方法:选择42例胆囊疾病,采用腹腔镜四孔法进行分离胆囊,用钛夹夹闭血管和胆囊管,将胆囊从脐部孔取出。
- SiGe HBTs'Two Port Network Parameter Model and Its Simulation 双端口网络参数模型和模拟
- Whatever China's concerns on ore pricing, BHP has made a strong case for a merger to speed development of Australia's mineral resources and make better use of its overstretched rail and port networks. 不管中国对铁矿的定价是怎么想的，必和必拓公司提供了一个强有力的案例来加速澳大利亚矿产资源的发展，也更好地利用了延伸的铁路和港口网。
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
