Compared to the ac Transmission and local power generation, HVDC light system is not only cost advantages, it also exchanges to enhance ac power quality for a new approach.

比起交流输电和本地发电，轻型高压直流输电系统不仅具有成本优势，它也对提高交流电网电能质量提供了新的途径。

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By comparison with analogue AC servo system, some remarkable features of digital AC servo system, such op programming function, system stability and system performance are described.

通过与模拟交流伺服系统的比较，说明了全数字交流伺服系统可编程能力强、系统稳定性好、系统性能提高等特点。

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By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.

通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。

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Yn y ddadl ar 20 Mawrth 2012, fe ychwanegodd Leighton Andrews AC fod y system addysg yn un gweddol ac yn anelu at fod yn system dda.

BBC: Dadl ar adroddiad blynyddol ESTYN

In an AC system, such conversions needed only transformers, which were cheap and efficient.

FORBES: The warlock of Menlo Park

Bydd bil arfaethedig Peter Black AC, os caiff ei basio, yn sicrhau bod trafodaethau rhwng perchnogion safleoedd cartrefi parc a pherchnogion cartrefi parc yn cael eu monitro'n annibynnol ac y bydd yna system o gyflafareddu i berchnogion sydd ag achos i bryderu am y prosesau gweinyddol.

BBC: Dadl ar fil arfaethedig ynghylch cartrefi mewn parciau