1.
In ancient, copper was adopted as the major chop material. Carving stone replaced copper to be the major material since Ming Dynasty( about15 th century).
古代印章材料，大都以铜材为主。自明代（5世纪），石材取代了铜材，成为治印主要材料。
2.
The chief materials used in the construction of machines are metals.
用在机器结构上的主要材料是金属。
3.
THESE PRODUCTS MADE OUT OF BAKELITE ARE MAINLY USED AS KNOBS FOR LIDS& HANDLES FOR COOKWARE.
主要用作搪瓷锅及盖的把手，主要材料为酚醛塑料。
4.
The bidding price as calculated per the volume of the construction project and the quantity of consumption of the major materials, including steel, wood and cement.
（二）按照工程量清单计算的标价及钢材、木材、水泥等主要材料用量。
5.
Main material for installing: all kinds of channel steel, angle iron and plate iron.
（六）安装主要材料：各种型号的槽钢、角铁及铁板。
6.
It was built of red brick and had fine art-deco decoration.
主要材料是红砖，并配以精美的艺术装修。
7.
construction materials of the main parts
主要构件的结构材料
8.
Study on the Preparation and Properties of Bamboo Plastic Composites
竹塑复合材料的制备及主要材性研究
9.
The main classes of materials are metals, polymers, ceramics, and composites.
材料的主要分类为金属、高聚物，陶瓷，及合成材料。
10.
The leading industries are aluminum and magnesium alloy, energy storage material, silicone material, nano-powder material and functional ceramics, etc.
主要发展铝镁合金材料、能材料、材料、体材料及功能陶瓷等为主导的产业。
11.
Main materials of printed circuit board (PCB) substrate were macromolecule resins, which were typical viscoelatic materials.
电路板基板材料主要以高分子树脂为主，是典型的黏弹性材料。
12.
We take steel as the leading engineering material.
我们把钢作为主要的工程材料
13.
Uses:. Used mainly in making cemented carbides and magnetic materials, etc.
用途：主要用于制造硬质合金、性材料等。
14.
This retail department specializes in selling all kinds of architecture materials.
这个门市部主要经营各种建筑材料。
15.
Industrial Products: Livestock processing, building materials, mining.
主要工业产品：牲畜加工品、筑材料、石。
16.
The key parts are made of stainless steel.
主要关键部位采用不锈钢材料制成。
17.
The Analytical Approach to Components of Silicone Heat-conductive Materials;
有机硅导热材料的主要组成剖析方法
18.
The Present Application and Materials for Selective Laser Sintering
国内外主要SLS成型材料及应用现状