1.
There are two main kinds of timber trees-softwoods and hardwoods.
用材树种有两大类--软木材与硬木材。
2.
Teaching materials as the multi-functional resources for teachers autonomous development;
教材、学材、用材、研材——教师专业发展的宝贵资源
3.
Uwed as materiale gor furnace and exhaust gas cleaning systems of automobiles.
炉用材料，汽车排气净化装置用材料。
4.
bob sleigh
(运木材用)二橇拖材车
5.
bar tubing shapes and pipe benders
金属筒材、型材和管材用折弯机
6.
make A of B; make A out of B
用B(材料)作成A
7.
"Teaching Textbooks" or "Using Textbook":A Perspective of Improving Teaching Materials Function;
“教教材”还是“用教材教”——兼论教材使用功能的完善
8.
A flat piece of wood or similarly rigid material adapted for a special use.
板材木材或其它材料制成的板，备作特殊的用途
9.
To advocate comprehensive utilization and saving on the use of timber and encourage the development and utilization of timber substitutes
提倡木材综合利用和节约使用木材,鼓励开发、利用木材代用品;
10.
3) To advocate comprehensive utilization and saving on the use of timber and encourage the development and utilization of timber substitutes;
（三）提倡木材综合利用和节约使用木材，鼓励开发、利用木材代用品；
11.
"A rolling mill is used to form the material into various forms such as round rod, square or rectangular bar. "
人们使用轧机把材料加工成各种形状,如圆棒材、方棒材和矩形棒材。
12.
This material outwears all others.
这种材料比其它所有材料都耐用。
13.
We build houses with wood, iron, and steel.
我们用木材，铁和钢材来建造房屋。
14.
A filtering substance, such as filter paper.
过滤材料有过滤作用的材料，如滤纸
15.
Material used for soundproofing.
消音材料用于隔音的材料
16.
The mattress and cushioning material used should be made of approved material.
床垫和缓冲材料应采用经认可的材料。
17.
to make more rational use of raw and other materials
更加合理的使用原材料和其它材料
18.
Material: Is made by the medical noon-toxic high polymer material.
材料:由医用无毒高分子材料制成.