(n) an electric current that reverses direction sinusoidally, Syn.AC, alternating electric current, Ant.direct current, Example: In the US most household current is AC at 60 cycles per second
The Collaborative International Dictionary of English (GCIDE) v.0.53
. (Elec.) A current which periodically changes or reverses its direction of flow, especially an electric current that reverses direction sinusoidally, as is used for most domestic and industrial power requirements. Contrasted with direct curent. Syn. -- AC [ Webster 1913 Suppl. +PJC ]
The common household current is alternating. Alternating current is easier than direct current to transform to high voltage and back, making long-distance transmission more efficient. [ PJC ]
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย