查询词典 a period of years

Assuming a relatively constant rate of orchid evolution, the oldest common ancestor of the orchid family probably lived at least 76 million years ago, in the Late Cretaceous period.

假定兰花的进化过程一直保持一种相对稳定的水平，那么兰花家族最古老的共同祖先可能生活在距今至少7600万年前，即白垩纪晚期。

In today's issue of the journal "Nature," scientists Flvia Nunes and Richard Norris describe how they examined a four to seven degree warming period that occurred some 55 million years ago during the closing stages of the Paleocene and the beginning of the Eocene eras.

在距今约5，500万年前，也就是古新世与始新世交替时期，地球曾有一段温度上升4~7度的暖化时期；而在最近一期《自然》期刊中，科学家那恩斯与诺瑞斯描述他们如何检验该时期的暖化效应。

Soil bulk density of Z treatment was gradually increased in three years, which was significantly higher than that of C treatment in 0~20cm soil layer. 2.2 Effects of tillage systems on soil moisture content There was significantly positive correlation between soil pondage and rainfall of the same period in R, H and Z treatments, and the correlation coefficient was higher than C, especially the H treatment, its correlation coefficient was 0.70**, which reached a highly significant level, and its soil water retention was better than C.

免耕模式土壤容重在0~20cm均逐渐增高，最终显著高于常规耕作模式。2.2耕作模式对土壤水分的影响 0~20cm土层旋耕、耙耕和免耕模式土壤贮水量与同期降雨量显著正相关，相关系数皆大于常规耕作模式，耙耕相关系数为0.70**，达到极显著水平，土壤保水性好于常规耕作模式。

And in 9000 to 12,000 years ago, is still in the primitive society of the Neolithic period, how would such a solution difficult jade technology?

而在9000至12000年前，仍然是在原始社会新石器时期，如何将这种解决困难的玉技术呢？

The face of reform and opening up this huge historical opportunity, Dalian with tourism as the leading industries of the investment will start to have achieved considerable success, in a few years time to complete the urban development of the primitive accumulation period.

面对改革开放这一巨大的历史机遇，大连旅游业作为主导产业的投资将开始已经取得了相当的成功，在几年的时间才能完成的城市发展的原始积累时期。

And general day and Nuojiya are in a few years ago Chinese establish company of Nuo of joint ventures general hand in hand, move in China in TD2 period invite public bidding, general Nuo wins the bid in Wuhan only 200 million yuan, reave 6 into the market.

而普天与诺基亚几年前就在汉携手成立合资企业普诺公司，在中国移动TD二期招标中，普诺仅在武汉中标2亿元，抢走六成市场。

Giant Sauropod dinosaur found in Spain - Fossils of a giant Sauropod, found in Teruel Spain, reveal that Europe was home to giant dinosaurs in the Late Jurassic period -- about 150 million years ago.

西班牙发现巨型蜥脚类恐龙--巨型蜥脚类化石，发现teruel西班牙显示欧洲是回家晚侏罗纪时期的巨型恐龙--大约150万年前。

"Our goal is to use 2-year period to achieve high-manganese battery production, 5 years to achieve copper indium gallium selenide solar car battery industry, so that consumers only need to have a certain now aspects of 1 / 3 the cost of energy consumption cars."

"我们的目标是用2年时间实现高能锰电池的产业化，5年内实现铜铟镓硒太阳能汽车电池的产业化，让消费者拥有一辆只需要现在某些方面1/3能耗费用的汽车。"

It lived in the early Jurassic Period, about 200 million years ago, a time when Antarctica, South America, Africa, Australia and India were still joined and part of the supercontinent of Gondwana.

生存在大约20亿年前的侏罗纪。那个时候，南极洲，南美，和非洲，澳大利亚，印度还没有分开。

Film, directed by SunJingXuan planning, Fang Gaofeng and Wang LiQi starring room video clip is about two years in adolescent girls in a chance encounter, met in love, love, they ~ but doomed, because they always can blossom in the life the most high, the key period, they all have their own dreams, but god will let them out of touch the spark of life, so that they are how to deal with this section should not happen romance?

本片由孙景旋策划、执导，房高峰和王利琪主演的视频短片讲述的是两个处于花季年华的少男少女在一次偶然中相遇，相识，相恋～可是，他们的爱情注定不能开花，因为他们同在高三，处于人生中最关键的时期，他们都有着自己的梦想，可是老天却偏偏让他们碰出了生命的火花，那么，他们是如何处理这段不该发生的恋情的呢？

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。