?平衡三相负载

... balanced three-phase load 平衡三相负载 evenly balanced load-horizon lift 恒平起吊架 un-balanced load 不平衡负荷 ...

?对称三相负荷

balanced three-phase load 对称三相负荷 balanced three-phase system 对称三相系统; 平衡三相制 ..