NLP领域国际顶会（ACL EMNLP NAACLl等）的难度如何？ ACL、EMNLP、NAACL（北美分会）、COLING是NLP领域的四大顶会。前三个会由ACL（Association of Computational Linguistics）主办，COLING由ICCL（International Committee on Computational Linguistics）主办。 ACL、EMNLP、NAACL均为每年举办一次。因为是同一学术组织举办，所以会有些有意思的潜规则。例如ACL、EMNLP会在各大洲轮流举办
AC power supply N and L - All About Circuits In AC power supply, there are two symbols L and N N is Neutral while L is Live or Line? N is Neutral: Does it mean this wire is connected to ground and so it always 0V compared to ground L is Live or Line: what does it mean? Thanks!