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- The geologic dating methods, which include the paleontology method, archeomagnetism method, and isotopic method, present absolute ages or relative ages of geologic events. 前人已建立的地质定年方法(同位素法、古生物法和古地磁法)给出的是地质事件的“绝对年龄”或“相对年代”。
- Research and application of geological dating and gas hydrate experimental technology II. 地质测年与天然气水合物实验技术研究及应用2。
- The first Sm-Nd synchrone obtained in China with Sm-Nd methods is introduced and Sm-Nd isotopic geological dating in Early Archaean rocks in eastern Hebei has been determined. 适合低含量Sm,Nd的加压离子交换法。 同时介绍应用Sm-Nd法得出的我国第一条Sm-Nd等时线,测出了冀东早太古代岩石Sm-Nd同位素地质年龄。
- They've been dating for a long time. 他们一直频频约会。
- They haven't set a date for their wedding yet. 他们的婚期还没定下来。
- This Greek dish is of a very early date. 这个希腊盘子是很早时期的制品。
- I tried to fix the date in my mind. 我试着把那个日期牢记在心。
- Can you produce any proof of your date of birth? 你能出示有关你的生日日期的任何证件吗？
- All our information is up to date on the computer. 我们计算机上的信息都是最新的。
- It is no good asking her for a date. 要求和她定个约会也没有用。
- He can reel off the date of the king of england. 他能流畅地说出所有英国国王的生卒年份。
- The dresses on show are out of date. 展出的服装都过时了。
- Let's discuss the delivery date first. 我们先讨论交货日期。
- She acted rather iffy about dating him. 她对要跟他约会之事表现得迟疑不决。
- The date marked on the marble has been filed away. 刻在大理石上的日期已被磨掉了。
- A hiatus is the total interval of geologic time. 一个沉积间断是地质时间的总间隔。
- This type of bicycle is up to date. 这种款式的脚踏车是最新式的。
- I saw a tombstone bearing the date 1602. 我见到一块刻有1602年字样的墓碑。
- A passport that is out of date is invalid. 护照过期是无效的。
- Payment is due within60 days of the invoice date. 发票开出日期起60日之内付款。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
