风化

The calcareous skeletons of this distinctive species have weathered out from the limestone matrix.

这一独特物种的钙质骨骼已在石灰石矩阵中风化。

The artist called those bones "the hero's camail bestowed by the god", and endowed them with certain temperament of athanasy during natural weathering.

艺术家将这些骨片称之为上苍恩赐的英雄甲胄，赋予它一种历经自然风化后的某种不朽的气质。

According to the principle of strontium isotope stratigraphy, we attempt to determine the age of the boundaries for Campanian/Santonian and Maastrichtian/Campanian by 87Sr/86Sr ratios for Gamba section in southern Tibet.

在与国际上同期海相地层锶同位素演化曲线对比的基础上，研究了晚白垩世海相碳酸盐锶同位素组成与主要地质事件的关系；在将本研究锶同位素数据融入到全球中新代海水锶同位素曲线的基础上，综合作出了中新生代海平面变化和锶同位素对照曲线，讨论了全球风化速率，造山事件，气候，海平面变化以及灾变性事件对中新生代海水锶同位素的控制作用；根据锶同位素地层学原理，本研究尝试将碳酸盐锶同位素组成用于海相地层定年上，利用已有的全球海水87Sr/86Sr值-年龄数据库和测试的藏南晚白垩海相碳酸盐的87Sr/86Sr值，确定了岗巴剖面Campanian/Santonian和Maastrichtian/Campanian阶界线，标定了广泛分布于白垩纪的厚壳蛤化石的年龄；本研究还将这些方法推广到了塔里木盆地井下奥陶纪地层的年龄标定，确定了中/上，中/下奥陶统界线，从锶同位素角度获得了古岩溶作用证据，显示锶同位素地层学在解决海相地层对比，年龄确定及在岩溶型油气储层研究中的潜在价值和良好应用前景。

He attacked this wall, cemented by the hand of time, with his pickaxe .

他用他的鹤嘴锄开始去刨这道被时间风化了的墙。

These kinetic experimental results improve and deepen the knowledge of formation mechanisms of pyrite and chalcopyrite in deposits and stability of magnetite in weathering crust,etc.

有关动力学实验成果完善和深化了对矿床中黄铁矿、黄铜矿的形成机理和风化壳中磁铁矿的稳定性等方面的认识。

This inland plain, once a ridge of chalk upland, but now eroded, is largely denuded of the trees---mainly oaks---which covered it so densely during the Middle Ages, and which were a seemingly inexhaustible source of timber until they succumbed in later centuries to the charcoal burner and the builder.

这内陆平原，曾经是一座白垩质高地的脊背，但是现在已被腐蚀风化，那些树木已基本上被剥光——-主要是栎树——-如此在那中世纪年代浓密复盖住这块平原。这原先好像是取之不竭木材的源头，直至在几个世纪后期才屈从给烧炭者和建筑工人。

Sediments, accommodating various kinds of metals from weathering of drainage basins and anthropogenic discharges, may become a potential "chemical bomb" gradually.

沉积物容纳了来自流域自然风化及人为排放的各种金属元素，成为一个潜在的"化学炸弹"。

The Chondrite normalized REE pattern shows typical enrichment of LREE, with ∑REE peaking up to 318 mg kg^(-1) in central layer of the profile. Both Ce and Eu have a similar trend of variation in the profile, i.e. positive anomaly-negative anomaly-positive anomaly from bottom to top. The highest ∑REE value occurs where negative Ce and Eu anomaly and relatively higher Fe(superscript 2+)/Fe(superscript 3+) values also occur.

剖面稀土元素分布型式为轻稀土富集型，∑REE在风化壳中部达到最高值318 mg kg^(-1)，剖面上Ce和Eu均呈正异常－负异常－正异常变化趋势，∑REE最高值出现在Ce和Eu负异常和Fe(上标 2+/Fe(上标 3+)较高层位，∑REE与Fe2O3显著正相关。

But vintage clapboard buildings and weathered Chinese storefronts still adorn this tropical town.

但是，老式的建筑物和风化的隔板，中文的店面依然装饰点着这个热带的城市。

Once synonymous with porcelain, China is made when kaolin is mixed with petuntse, two forms of decomposed granite which fuse together in a very hot kiln to produce translucent clayware.

一度等于瓷器，中国是何时高岭土是混合petuntse，两种形式的风化花岗岩，融合在一个非常炎热窑生产半透明clayware。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷