- valid period
- n.有效期限
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
valid period
Look at other dictionaries:
valid — val‧id [ˈvæld] adjective LAW a valid document or agreement is legally acceptable, often for a fixed period of time: • The court ruled that the firm s patent is valid and enforceable. • Investors with valid claims against the company could… … Financial and business terms
Valid time — (VT) is a concept used in temporal databases. It denotes the time period during which a database fact was, is, or will be valid in the modeled reality. In a database table valid time is often represented by two extra table columns StartVT and… … Wikipedia
valid — adjective 1 a valid ticket, document, or agreement can be used legally or is officially acceptable, especially for a fixed period of time or according to certain conditions: a valid passport | Your return ticket is valid for three months. 2 valid … Longman dictionary of contemporary English
Nanboku-chō period — For other uses of Northern and Southern Courts period , see Northern and Southern Courts period (disambiguation). History of Japan Mount Yoshino Paleolithic 35,000–14,000 BC Jōmon period 14,000–300 BC Yayoi … Wikipedia
A Valid Path — Infobox Album | Name = A Valid Path Type = Album Artist = Alan Parsons Released = August 24 2004 Recorded = Genre = Progressive Electronic Length = 49:16 Label = Artemis Producer = Alan Parsons Reviews = * Allmusic Rating|3|5 [http://www.allmusic … Wikipedia
Witch trials in the Early Modern period — Punishments for witchcraft in 16th century Germany. Woodcut from Tengler s Laienspiegel, Mainz, 1508. The Witch trials in the Early Modern period were a period of witch hunts between the fifteenth and eighteenth centuries,[1] when across Early… … Wikipedia
Scrip of Edo period Japan — During the Edo period, feudal domains of Japan issued scrip called nihongo| hansatsu |藩札 for use within the domain. This paper currency supplemented the coinage of the Tokugawa shogunate. Most scrip carried a face value in silver coinage, but… … Wikipedia
Oyster card — Location Greater London Launched July 2003 Technology Contactless smart card by Cubic Corporation … Wikipedia
MAFOR — MAFOR, an abbreviation of MArine FORcast, is a code used in the transmission of marine weather forecasts to compresses a volume of meteorological and marine information into shorter code for convenience during radio broadcasting. The MAFOR… … Wikipedia
London Underground — Infobox Public transit name = London Underground The Tube |thumb|Official logo. imagesize= 150px locale = Greater London, Chiltern, Epping Forest, Three Rivers and Watford transit type = Rapid transit began operation = 1863 system length = 400 km … Wikipedia
Precipitation (meteorology) — Long term mean precipitation by month In meteorology, precipitation (also known as one of the classes of hydrometeors, which are atmospheric water phenomena is any product of the condensation of atmospheric water vapor that falls under… … Wikipedia
