查询词典 guide fossil

In fishing,the sliding cone blocks enter the fish cavity easily acted by a guide shoe and a guide cone,slide downward by its own weight,produce relative displacement to the guide rail slope,and the radial distance between its tooth face and the spear rod increases until it touches the inner wall of the fish cavity; while lifting the drilling string,the guide rail slope on the spear rod forces the sliding cone blocks to bite the inner wall of the tubing fished.

打捞时在引鞋和导锥的作用下滑牙块能够顺利进入鱼腔并依靠自重下滑，沿导轨外伸直至其齿面与鱼腔内壁接触；随后上提钻柱，矛杆上的导轨斜面迫使滑牙块咬紧被打捞油管内壁，当油管严重偏磨使一对滑牙块卡在磨穿位置时，另一对能有效卡在未磨损部位，同时外筒限制了油管外胀变形。

A Living Fossil Fish: The arapaima is a true prehistoric river monster, with the fossil record showing that it has roamed the waters of the Amazon River since the Jurassic age.

活着的化石：巨骨舌鱼是史前生物，化石研究表明其早在侏罗纪时期就出现了。

Archaeopteryx fossil The passage claims that the fossil is a fake one.

阅读： 伦敦大英历史博物的始祖鸟化石是假的。

Methane clathrate is a non-traditional fossil fuel that is cleaner than traditional fossil fuels.

可燃冰是一种非传统的化石燃料，但是比传统化石燃料更洁净。

We have extracted DNA from the inclusion of a dinosaur egg fossil from the Late Cretaceous in Xixia Henan,China, DNA fragments are isolated from the floccus in the cavity of the egg fossil,and confirmed by the method of random primer isotope labelling.

本文从河南省西峡晚白垩世的一枚保存方式特殊的恐龙蛋化石中提取DNA，经过￣32P同位素标记和电泳分析，发现在蛋内腔的絮状物样品中确有DNA片段存在。

Fossil of tooth of high-definition clear Yuanmou ManYuanmou Man fossil includes two to go up inside fore-tooth, one left one right, belong to same adult individual.

高清晰元谋人牙齿化石元谋人化石包括两枚上内侧门齿，一左一右，属于同一成年人个体。

Lesson 1 Finding fossil man 第一课发现化石人 by ROBIN PLACE from Finding fossil man 1-1. We can read of things that happened 5,000 years ago in the..

现今社会对个人英语能力的要求越来越趋向于全面，写作作为语言运用体系中书面输出部分，也变得日趋重要：个人英文简历，各种各样的考试中的写作，各处无不体现着英文。。

Researches on the strata and their sedimentary facies in the Sandy Desert Area of China since 150000aBP., fossil verteberates, mollusks and sporo-pollen, and the remains of fossil man activities and the analysis resultes of grain-sizes, detrital heavy minerals, clay minerals, chemical elements and CaCO〓as well as the susceptibility values of the strata comprehensively show that the afore-named four sandy desert areas since that time, all had ever undergone intensely developing sandy desert processes but they did not all evolve towards uniform this environment, and the content and form between them were different.

通过对中国沙区15万年来的地层及其沉积相、古脊椎动物、软体动物化石、孢粉、古人类活动遗存与颗粒、碎屑重矿物、粘土矿物、化学元素、CaCO〓分析结果和地层磁化率值等的研究，表明从那时以来上述四大沙区都曾经有过强烈的沙漠发展过程，但这几个沙区沙漠环境的发展并不都是朝着一个方向，且几者间地质过程的内容与形式是不同的。

Darwin discussed about some anomalous forms in fresh water basins, which belong to the remnants of some interesting orders. Because these anomalous forms exhibit the anomaly of geographical distribution e.g. Ganoid fishes, or morphological anomaly such as Ornithorhynchus and Lepidosiren , they may be called living fossils. It is believed that Darwin presented the facts of the above anomalous forms, and used the term "living fossil" in order to further illustrate the subject of "Circumstances Favorable for the Production of New Forms Through Natural Selection" in Chapter IV. The term "living fossil" appears on page 486 again in the last Chapter, i.e. Chapter XIV "Recapitulation and Conclusion", where Darwin emphasized the significance of so-called "living fossils".

第一次在该书第四章"自然选择"（第107页）：为了在该章深刻阐述"通过自然选择产生生物新类型的有利条件"这一主题，达尔文谈到了淡水流域中残存着地理分布或形态上很异常的一些生物，如：硬鳞鱼、鸭嘴兽和美洲肺鱼，可以称之为"活化石"；第二次是在该书最后一章"复述与结论"（第486页），达尔文对"活化石"的作用进行了小结。

Weiyi linked to Banff, Jasper, Kootenay National Park and about the tiger, and Robson Hill, because of ACE Nibo Hill Park and Han Bo Pu Luo Wenxiu constitute a beautiful mountain landscape, where there are peaks, glaciers, Lakes, waterfalls, canyons and limestone caves.well-known fossil sites in the marine fossil mollusks, also found here.

逶迤相连的班夫、贾斯珀、库特奈和约虎国家公园，以及罗布森山、阿西尼博因山和汉伯普罗文秀公园构成了一道亮丽的高山风景线，那里有山峰、冰河、湖泊、瀑布、峡谷和石灰石洞穴。伯吉斯谢尔化石遗址里著名的海洋软体动物的化石，在这里也有发现。

For every one of my New Year resolutions, I have been a backslider for years.

说到我的新年决心，我每年都做

With empathy and focus on a feeling level, we can all relate to the common ground of mutuality of emotions.

有了同情心和感觉上一级的重点，我们都可以涉及到相互的情感共同点。