n.日光節(jié)約時(shí)間(直接螺旋鑄壓)

Some time zones do not have DST. 某些時(shí)區(qū)沒有DST。

Many countries observe DST, and many do not. 換言之，冬令時(shí)間將縮短約一個(gè)月。

The new 2007 DST start dates and end dates for the United States. 美國2007 DST的新開始日期和結(jié)束日期。

Application for DST technique in the test of Shengli Oilfield. 地層測(cè)試技術(shù)在勝利油田試油中的應(yīng)用狀況

DST revealed 75%AD, 77.8%MID patients were nonsuppressors. 部分地塞米松抑制試驗(yàn)顯示：70%25AD、77.