锆

Given what geologists think the temperature of these zircons was when they formed, that means the diamonds were probably squeezed into being by the pressure of 100-150 kilometres of crustal rock lying above them.

假定地质学家所认定的锆石的温度就是指它们成形时需要的温度，那也就是说那些钻石很可能在承受了来自于外部的，厚达100到150公里的地壳岩石的压力后被挤压成形。

Two groups of ages were obtained, with weighted average 206Pb/238U ages of 973±60Ma for round zircons, and 422±7Ma for prismatic ones, respectively.

对26颗锆石核部和生长边进行28次U-Pb同位素分析，获得两组206Pb/238U年龄，分别为973±60Ma和422±7Ma。

If nitrogen is present as single atoms, it would hint that the diamonds were produced rapidly and at relatively low temperature - as might happen if the diamonds formed from pockets of graphite in the zircons in a single, rapid event. That would make the diamonds young.

如果氮元素被证实是以单个原子的形式存在，这意味着钻石是在相对低温的环境下快速形成的——对那些由锆石中的石墨矿囊转变成形的钻石来说，如果单一而快速的条件具备，这种情况就很可能会发生，并将证明这些钻石的年代并不久远。

In addition, there are a significant amount of inherited zircons at the age of ?2.7Ga, which indicates that the granitoids may be the products of remelting of former crustal rocks and the Jiaodong Comples-Group is the major component of the source rocks.

其中存在年龄为2.7Ga左右的继承性锆石，这显示了这些花岗岩类为壳源重熔的产物，而胶东岩群可能为其重要源岩之一。

The upper intercept age indicats a low limit of crystal age of the zircons and suggests a basaltic volcanic event at 1.8 Ga ago in this area.

其上交点年龄指示了该锆石的最小结晶时代，它表明在18亿年时该地区曾有一次玄武质火山岩事件。

Because zircons are 8-10 feet below the surface of the earth under the earth, and in addition to local deposits located below the horizon, so that when water is often flooded mines.

因为锆石大多位于表土层下8-10英尺下，且当地的矿床又多位于水平线以下，因此开采时水经常会淹没矿坑。

We try to use Cr thin films to improve Zircaloys properties on the background of engineering application.

基于某工程应用研究背景，我们尝试用铬来提高锆合金的性能。

Zircaloys ; ions implantation ; surface modification ; irradiation corrosion ; potentiodynamic polarization measurement

清华大学；彭德全锆合金；离子注入；表面改性；辐照腐蚀；动电位极化曲线测量

This article discussed a superficial nanometer processing to the zircaloy corrosion resistance performance influence.

本文讨论了表面纳米化处理对锆合金的抗腐蚀性能的影响。

Thin film materials have been widely used in industry and high-tech field. Many researches have been taken on various films, but to our knowledge, little work has been done on Chromium films deposited on Zircaloy substrate.

薄膜材料在工业及高科技领域的应用越来越广，对各种薄膜材料的研究也非常之多，但关于铬／锆薄膜体系的研究却很少有报道。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。