刚玉

The lithologies of the Al rich rocks under ultra high pressure metamorphism in central China are characterized by kyanite topaz quartzite which has special mineral associations of kyanite, rich topaz,Mg rich chloritoid,coesite and diaspore.

我国中部在超高压条件下形成的高铝质变质岩石，以蓝晶黄玉石英岩为特征，具有以蓝晶石、富水黄玉、富镁硬绿泥石、柯石英、硬水铝石等为代表的高压－超高压变质矿物，矿物组合主要为蓝晶石＋黄玉＋石英、蓝晶石＋蓝刚玉±富镁硬绿泥石等。

"It is the most abundant metallic element in Earth's crust, chiefly in bauxite, feldspars, mica s, clay minerals, and laterite. It also occurs in gemstones, such as topaz, garnet, and chrysoberyl; emery, corundum, ruby, and sapphire are crystalline aluminum oxide."

为地壳中丰度最高的金属元素，多存在于铝土矿、长石、云母、黏土等矿物和砖红壤中，也存在于宝石之内，如黄宝石、红宝石及金绿宝石；而刚玉金刚砂、深红宝石及蓝宝石则为晶透的氧化铝。

"It is the most abundant metallic element in Earth's crust, chiefly in bauxite, feldspars, micas, clay minerals, and laterite. It also occurs in gemstones, such as topaz, garnet, and chrysoberyl; emery, corundum, ruby, and sapphire are crystalline aluminum oxide ."

为地壳中丰度最高的金属元素，多存在于铝土矿、长石、云母、黏土等矿物和砖红壤中，也存在于宝石之内，如黄宝石、红宝石及金绿宝石；而刚玉金刚砂、深红宝石及蓝宝石则为晶透的氧化铝。

The problem of misusing of coating categories that exists in current super-hard abrasive coating/deposition and their correlative product is analyzed.This article is divided into two parts. The methods, performances and applications of electroplating and chemical plating Ni, Cu and plating metal which partly uses physical means, and some coati...

本文由于篇幅问题分为两部分，在中主要介绍了超硬磨料表面电镀和化学镀镀覆Ni、Cu及部分利用物理方法镀覆Ti等金属的方法、性能及用途；在中介绍了超硬磨料表面镀覆Ti等强碳化物形成元素及刚玉等方法、性能及用途。

My company has an annual output of 5,000 tons of fused zirconia corundum productivity and first-class processing equipment.

我公司具有年产电熔锆刚玉5000吨的生产能力和一流的加工设备。

In addition, there are some special species, such as sintered corundum abrasives, etc..

此外，还有一些特殊品种，如烧结刚玉磨具等。

In addition, there are some special species, such as abrasives, such as sintered corundum.

此外，还有一些特殊品种，如烧结刚玉磨具等。

Corundum has a hardness of 9 on the Mohs scale and is also extremely tough.

有9刚玉硬度的层数、规模也非常强硬。

Ruby is a corundum that may be any color of red depending on the chromium and iron content of the stone.

Ruby是一种刚玉，可能是任何颜色的红色取决於铬和铁的含量的石头。

Corundum is the integrated production, ferroalloy products, such as the abrasive abrasive enterprises.

是综合生产刚玉、铁合金等系列产品的磨料磨具企业。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。