The primary material used in production of steel.

其中的铁矿石是生产钢铁的主要材料。

Depending on the material used, the laser can react differently.

根据使用的材料，激光可以产生不同的反应。

But supplies of the materials used to make them are limited.

但用于制造它们的材料供应有限。

It collects, preserves and maintains the raw genetic material used in agriculture.

这里收集、保存并维护农业中使用的原始基因原料。

Petroleum or crude oil is the same raw material used to make sodium polyacrylate.

石油或原油是用来制造聚丙烯酸钠的相同原料。

Allegheny Technologies, which makes composite materials used in the aircraft, has been similarly clobbered.

制造飞机所用复合材料的阿勒格尼技术公司也遭受了类似的打击。

There are shortages in a number of materials used to make the things we buy.

用来制作我们购买的商品的一些材料出现了短缺。

It is popular because the materials used to build it are not hard to find.

它非常受欢迎，因为制造原料很容易找到。

Lithium is an important material used in making some kinds of batteries.

锂是制造某些类型电池的重要材料。

One of the main materials used to produce lithium-ion batteries is lithium, a light metal substance.

生产锂离子电池的主要材料之一是锂，这是一种轻金属物质。

Initiatives include efforts to reduce its environmental impact, water consumption and materials used in packaging by 2025.

该公司的倡议还包括，到2025年，减少其对环境的影响、水的消耗以及包装材料的使用。

Researchers look at about 70 different features of each piece of net, including the kinds of material used.

研究人员研究了每张网的70个不同特征，包括使用的材料。

Like how thick and warm the runners can be the overall size and material used to make the sled.

比如雪橇的厚度和温度取决于雪橇的整体尺寸和材料。

As the most common material used to create semiconductors is silicon, this region soon became known as Silicon Valley.

因为用于产生半导体的最常见的材料是" 硅" ，于是这个地区很快就被称为" 硅谷" 。

The development team says the treatment contains only safe materials widely used in food, drug and agricultural products.

该研发团队表示，这种粘稠物体只包含对环境无害的物质，这些物质已广泛适用于食物、药物、农产品中。

OK, so what about the raw materials used?

好的 那么使用的原材料呢？

Materials used to make them can be extracted and reused in other things.

用于制造它们的材料可以提取并重新用于其他事物。

Because cashmere is more than a material used to make really soft sweaters.

因为羊绒不仅仅是一种用来制作柔软毛衣的材料。

And a 3rd contain materials used for packaging food and other products.

第三种是用于包装食品和其他产品的材料。

Ruffs were fragile, in the material used to construct them could fall apart due to hot weather, rain or body heat.

制作拉夫领的材料很脆弱，在炎热的天气、雨水或体温的作用下，领子很可能会散架。