四线的 meaning in English

fourwire
quadded

3 - phase 4 - wire lateral main tee - off from rising mains not provided at each floor
并无在每一层楼从上升总线引出三相四线的横向总线。
The widening of tolo highway between ma liu shui and yuen chau tsai from dual three - lane to dual four - lane was completed in 2003
吐露港公路马料水至元洲仔段由双程三线扩阔至双程四线的工程已于二零零三年完成。
Reports of his experiments vary , but most likely he used a four lined rounded nose diamond kite to power his cart to speeds of up to 25 miles per hour
关于这项实验的说法众说不一，不过最有可能的是他是利用了四线的钻石形风筝进行动力牵引以达到高到时速25英里每小时。
In order to obtain three - phase four - line ac output , system applied the four - legged main circuit topology . with the 3d - svm , the power system realizes voltage regulation and three - phase four - line output . meanwhile , this kind of control is easy to be realized in the digital inverter
为实现三相四线的交流输出，变换器电路采取四桥臂新型拓扑，其控制采取了三维空间矢量调制，实现了变换器的在线调压及输出中点的形成，具有良好的动静态性能，且这种控制思想可以方便地在现有数字变换器平台上实现。