frequentadj.频繁的;经常的vt.常到;常去
frequent pulse脉搏频速
frequent after间接探听
frequent guest常客
frequent visits频繁的访问
Frequent Defect常发性纱疵
frequent update频繁更新
frequent tariff榷关
frequent attack时常发作
Frequent hemset频繁项集
frequentic acid常见青霉酸