查询词典 zircon

A forof single zircon U-Pb dating and whole rock isochron of Sm-Nd dating suggested that thePalooproterosoic rock in Chthaysia Bfork is formed in the time span from 2 400 Ma to 2000 Ma,Mesoproterocoic frOIn 1 400 Ma to 1000 Ma and the latest formdfrom 740 Ma to 430 Ma.

该区变质基底的时代划分、区域对比、基底结构和性质一直存在较大的分歧和争论，最早Grabau（1924）认为中国东南沿海存在太古代的基底，提出华夏古陆的概念匕］。

SHRIMP zircon U-Pb dating for the west end of Tiding ophiolite yields a 128±2 Ma age for gabbros.

对日喀则西侧吉定蛇绿岩辉长岩中锆石的SHRIMP U-Pb定年确定其形成于128±2Ma。

New zircon U-Pb ages of the Chongjiang and the Qulong ore-bearing porphyries in the Gangdese porphyry copper belt are analyzed by using ELA-ICP-MS dating technique.

利用ELA-ICP-MS分析技术对冈底斯斑岩铜矿带冲江及驱龙含矿斑岩体进行锆石U-Pb年龄测定，所得到的年龄分别为14。

Thus wetted the clusters are stuccoed with silica sand or zircon sand.

因此，湿集群是stuccoed与石英砂或锆石砂。

Production and operation of the Company's jewelry / accessories cover has: 18K gold, 14K gold, 9K gold, silver, 925 silver, copper, 316L stainless steel, alloy;(gemstones / semi-precious stones in part): diamond, white zircon, Cai zirconium, stained glass, agate, crystal,, Opal, turquoise, black Tahitian pearls, imported high-grade shells, coral and natural all over the world, such as miscellaneous total more than 200 kinds of stone.

本公司生产经营的首饰/饰品涵盖有：18K金、14K金、9K金、纯银、 925银、铜、316L不锈钢、合金；：钻石、白锆、彩锆、彩色玻璃、玛瑙、水晶、虎眼石、猫眼石、松石、大溪地黑珍珠、进口高档贝壳、珊瑚以及世界各地的天然杂石等共有200多种。

Major operations, agate,, Zircon, Opal, crystal, colorful stones, the Persian Gulf, Burma Jade, bracelet, in addition to operating a variety of silver bracelets, necklaces, bracelets

主要经营，玛瑙，虎眼石，锆石，猫眼石，水晶，五彩石，波斯湾，缅甸玉，手链，另外还经营各种银手镯，项链，手链

For example, alkaline elements can affect diffusion velocity of Zr, Si and O ions although these alkaline elements cannot exist in crystal structure of zircon. However, K rich media and Na rich media exert different effects on the growth of crystal form: in the K rich media, growth speed of prism faces in the vertical direction is much higher than that of pyramid faces, and {111} growth speed in the vertical direction is higher than {311},which decides the formation of bipyramids dominated by {311} pyramids; in the Na rich media, both prism and pyramid grow to a certain extent, but the former is smaller than the latter.{100} growth speed in the vertical direction is lower than {110}, while {111} growth velocity in the vertical diredtion is lower than that of {311},resulting in the growth of the crystal form characterized by {100} short prism and {111} pyramid.

例如，尽管碱性元素并不进入锆石晶格，但它们可以影响Zr、Si、O离子的扩散速度，但是富钾和富钠的介质对锆石晶形发育的影响是有差别的，表现为：在富钾的介质中，将导致柱面的法向生长速度较锥面快得多，而锥面中，｛111｝的法向生长又较｛311｝快，由此决定了形成以｛311｝锥为主的双锥状晶体；在富钠的介质中，柱面和锥面都有一定程度的发育，但前者弱于后者，而柱面中，｛100｝的法向生长较｛110｝慢，由此决定了形成以｛100｝柱和｛111｝锥为主的短柱锥状晶体。

The result show that the samples are compactest when a-Al2O3/ content is 10wt% at 1450℃, zircon start to decomposes at 1350℃, little mullite are found at 1450℃, there are lots of mullite at 1500℃, apparent poroes become more, bulk density falls.

结果表明，1350℃时硅酸锆已经开始分解，添加a-Al2O3/为10%、温度为1450℃时烧结体最致密，相对密度达到95%，1450℃时已有少量莫来石相形成，1500℃时形成较多莫来石相，气孔增多，体积密度降低。

We want to buy Coal, Scrap Metal, Iron Ore, Iron Sand, Zircon Sand Timber Flooring Coal and Coke

我们要采购煤，小片金属，矿砂，铁沙子，锆石沙子木材地板煤和可乐

A single zircon U-Pb age of 3605±43 Ma from the oldest granite-gneiss was reported in Aketashtage, eastern Altyn Tagh, which is located on the southeastern margin of the Tarim Platform.

在阿尔金山阿克塔什塔格曾测得3605±43 Ma的单颗粒锆石U-Pb年龄数据，获得了古老地壳存在的同位素年代学信息。

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。