查询词典 boundaries

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。

Not far on the sky from the handle of the Big Dipper, they officially lie within the boundaries of the small constellation Canes Venatici.

它们和北斗七星的手柄的距离并不算远，经常出现在猎犬座的边界上。

Notfar on the sky from the handle of the Big Dipper, they officially liewithin the boundaries of the small constellation Canes Venatici.

不远处的天空从处理斗，他们正式谎言的边界内猎犬的小星座。

And I look down at my arm and I realize that I can no longer define the boundaries of my body. I cant define where I begin and where I end.

我低头看自己的手臂，可已经无法感知自己身体的边界了，不知道哪里是属于我自己的，哪里是周围的事物。

The zone boundaries zigzag capriciously according to the whims of the local population.

按照当地居民的意愿，时区界线被划分得弯弯曲曲。

Drawing inspiration from personal experiences, both good and bad, Caracal illustrates the boundaries of human emotion through their music.

他们从自身的所见所感出发，用音乐诠释自己的生活。

Most of the country is a plain with no natural boundaries except the Carpathian Mountains in the south and the Oder and Neisse rivers in the west.

除了南方的喀尔巴阡山脉和西部的奥得河以及奈瑟河，波兰整个国家几乎都是平原，没有明确的自然分界线。

The main problem is the status of the Caspian Sea and the establishment of the water boundaries between the five riparian countries.

主要的问题就是里海的位置和五个绕里海国家的水分界线的划分。

The results show that, when the computational error and its accumulation are eliminated effectively, the laminar flow in OFR with perfect-symmetric boundaries behaves in a pattern of central symmetry and circumferential uniformity while the turbulent flow field presents a centrally symmetric and circumferentially non-uniform structure with 8 transverse vortices arrayed circumferentially in a way of central symmetry, similar to Taylor vortices in Couette flow.

模拟结果表明在有效消除计算随机误差以及误差积累的情况下，几何边界理想对称OFR内的三维层流流场呈现出良好的中心对称性和周向均匀性，而湍流流场中心对称的同时呈现出周向非均匀结构－在圆周上生成8个中心对称排列的横向漩涡，其形态与Couette流中的泰勒涡类似。

If there was too much cerium segregated on the grain boundaries, it will considerably decrease the impact toughness of the steels.

钢中的铈碳化物对钢的韧性和塑性都有改善作用，对钢的屈服点没有发现显著的影响。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。