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- desert formation age 沙漠形成时代
- To promote the development of polymer mud , the formation age and development of polymer mud are discussed . 为促进聚合物泥浆体系的研究和发展,从学术定义出发对聚合物泥浆的形成年代、发展历程及今后发展方向进行了综述。
- In addition, there is a better linear logarithmic relation between the height (H) of a terrace over river bed and its corresponding formation age (A). 阶地高出河床的高度(H)与其相应的形成年代(A)有较好的线性对数关系。
- Through K-Ar isotope age study in pillow basalt,has gained the isochrone age is 139Ma.The age is the formation age of pillow basalt. 在枕状玄武岩中获得K-Ar(全岩)同位素年龄为139Ma(测试单位:宜昌地质矿产所同位素室),因此确定其时代为晚侏罗世晚期。
- There are two levels planation surfaces and one piedmont and several terraces.Secondly, The formation age of these leveled landforms is contrained by paleomagnetism, fission track dating. 通过沉积地层学、磁性地层、地层对比等多种研究方法限定了这些地貌面的形成时代;
- Endogenic rare and rare earth mineral deposits are widespread in China, and data of their formation ages are available from Archean to Himalayan. 摘要内生稀有稀土矿床在我国广泛分布,矿床的形成时代从太古宙到喜马拉雅期。
- The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
- formation age of the solar system 太阳系形成年龄
- The continental deposits of Enping formation aged from Oligocene to Eocene of Palaeocene are well-developed and widespreaded in the Pearl River Mouth Basin. 珠江口盆地下第三系始新统至渐新统恩平组分布广泛。
- Pirates used to maroon people on desert islands. 海盗过去惯常把人们遗弃在荒岛。
- A desert has no settled population. 沙漠没有固定的居民。
- Desert Formation and Evolution in Qaidam Basin since the Last Glacial Epoch 末次冰期以来柴达木盆地沙漠形成与演化
- He went forth into the desert to pray. 他向前走到沙漠中祈祷。
- Few plants or animals thrive in the desert. 很少植物或动物能在沙漠中很好地生长。
- There are lots of dunes in the desert. 沙漠里有许多沙丘。
- There was a great expanse of desert before us. 我们面前有一片广阔的沙漠。
- The travellers in the desert felt thirsty. 沙漠中的旅行者感到口干舌燥。
- The desert continued as far as the eye could see. 沙漠一直伸展到视线的尽头。
- SEDEX Pb-Zn deposits such as the Xitieshan Pb-Zn deposit and VHMS Cu-S deposits such as the Qinglongtan Cu-S deposit occur in this Caledonian orogenic belt, but their geological settings and formation ages are different. 柴北缘加里东造山带中既产有VHMS型Cu_S矿床(如青龙滩矿床),也产有SEDEX型Pb_Zn矿床(如锡铁山矿床),两者的成矿地质构造背景和形成年龄不相同。
- The barren, inhospitable desert. 那片贫瘠的、荒凉的沙漠