Rubies, valued as precious gems, are the mineral corundum in its red form.

作为一种珍贵的宝石，红宝石是一种红色的矿物刚玉。

True rubies are, in fact, the red variety of a mineral called corundum.

事实上，真正的红宝石是红色刚玉族矿物。

Moreover, corundum and periclase have not been detected in space dust before.

而且，此前在太空尘埃中还未侦测到刚玉和方镁石。

Relating to or designating corundum that resembles another stone in color.

关于或表示在颜色上类似另一块石头的刚玉的。

Either way, these gems are among the most beautiful of the corundum family.

无论如何，粉红色的刚玉是最迷人美丽的宝石之一。

Ruby, the common name for the mineral corundum in its red form, is a precious gemstone.

红宝石是对红色矿物刚玉的俗称，它是一种珍贵的宝石。

In this paper a new kind of superhard abrasive with corundum-coating was introduced.

本文介绍了一种新型的刚玉涂覆的超硬磨料。

Made up of the elements aluminum and oxygen, corundum also can be yellow, gray, or brown.

由铝和氧两种元素构成的刚玉，会呈现出黄色、灰色或者棕色。

Made up of the elements aluminum and oxygen, corundum also can be yellow, gray, or brown.

制造的基础是氧化铝，金刚砂可以是：黄色，灰色和棕色。

The effect of spinning pack of corundum filter plate on spinning for Nylon 66 was studied.

探讨了纺丝组件刚玉过滤板对尼龙66纺丝的影响。

Corundum abrasive with bauxite as the main raw material formed at high temperature melting.

棕刚玉磨料以铝矾土为主要原料经高温熔炼而成。

A sapphire, the common name for the mineral corundum in its transparent blue form, sparkles.

这是一颗熠熠生辉的蓝宝石。对显而易见的蓝色矿物刚玉通常称之为蓝宝石。

Only red corundum is entitled to be called ruby, all other colours being classified as sapphires.

只有红色的刚玉可称为红宝石，其他任何颜色是命名为蓝宝石。

In an ultrabasic rocks in North Jiangsu, corundum was first discovered and some was up to gem grade.

苏北某地超基性岩中，首次发现了红刚玉，少量已达宝石级。

Used for corundum bricks , mullite bricks , silicate bricks masonry in blast furnaces , hot air stoves .

用于高炉、热风炉砌筑刚玉砖、莫来石砖、硅线石砖、低蠕变高铝砖。

The utility model relates to a corundum sieve tube used in the field of oil field and oil well production.

本实用新型涉及油田油井开采领域中用到的一种刚玉筛管。

At first, the effect of particle size and additions of andalusite on mullite-corundum materials were studied.

首先，研究了红柱石的粒度和加入量对莫来石-刚玉材料性能的影响。

Secondly, the effect of particle size and additions of kyanite on properties of mullite-corundum was studied.

其次，研究了蓝晶石的粒度和加入量对莫来石-刚玉材料性能的影响。

Hardness than corundum, abrasive easily broken, sharp edges and corners, good cutting, grinding heat and small.

硬度高于棕刚玉，磨粒易破碎，棱角锋利，切削性能好，磨削热量小等。

It introduces process control point of chrome corundum permeable brick and its application in smelting ferroalloys.

介绍了铬刚玉透气砖的生产控制要点和在铁合金精炼中的应用方法。

The rupture of corundum-mullite materials was controlled by crack at room temperature and creep at high temperature.

刚玉莫来石材料的断裂在室温下由裂纹扩展控制，在高温下由蠕变机制控制。

Emery, Natural Corundum, Natural Garnet, Natural Abrasives, Aluminum Oxide, Waste Of Plastics, Parings Of Plastics, Iron.

新加坡公司求购刚玉砂，天然金刚砂，天然石榴石，天然磨料，氧化铝，塑料废料，塑料切片。

The result can provide reference for technical application and theoretical analysis of the corundum-rubble concrete shelter.

研究成果可为刚玉块石混凝土遮弹层的工程应用和深入理论分析提供依据。

Corundum brick and chrome-corundum brick are the key refractories for gasifier and reaction furnace in petrochemical industry.

刚玉砖及铬刚玉砖是石化行业造气炉和反应炉的关键耐火衬里材料。

At last, this paper studied the effect of particle size and additions of sillimanite on properties of mullite-corundum materials.

最后，研究了硅线石的粒度和加入量对莫来石-刚玉材料性能的影响。

The crystals were housed in magnificent Temples, some built of marble, others of crystalline sheets of beryl, corundum and diamond.

水晶被安置在宏伟的神殿里，一些为大理石建造，其他的由绿玉，刚玉，钻石建成。

The corrosion behaviors of the different additions to corundum-spinel castable refractory were studied by using static crucible method.

用静态坩埚法研究了加入不同添加剂的刚玉-尖晶石浇注料抗渣侵蚀行为。

Under the condition of applying scale test of UNITANK process, rubber film aerator and campanulate corundum aerator have been investigated.

在生产性试验条件下，考察了橡胶膜片曝气器与钟罩式刚玉曝气器在UNITANK工艺中的实际应用情况。

But in general, sapphire only refers to blue corundum. Other color corundum often named by their colors: yellow sapphire, green sapphire etc.

通常蓝宝石泛指蓝色的刚玉，其它颜色的刚玉则通常用其颜色来描述，如黄色蓝宝石、绿色蓝宝石等。