There are a lot of plastics out there.
有很多种塑料。
These toys are all made of plastics.
这些玩具都是塑料制的。
Many shoes nowadays are made of plastics.
现在许多鞋是用塑料制作的。
It is not made of steel, but of plastics.
这不是钢做成的，而是塑料做成的。
The application of plastics is on the increase.
塑料的应用正在增多。
At present, many things are made out of plastics.
现在许多东西都是用塑料制成的。
I was told that some bikes are made of plastics in stead of steel.
有人告诉我，有些自行车是用塑料而不是用钢制作的。
They would rather use machine parts of plastics than use those of metals.
他们宁可使用塑料机器零件，也不用金属机器零件。
The air permeability back board can be made of plastics or other materials.
透气背板可用塑料或其他材料制成。
It is a kind of plastics pipe of energy saving and environmental protection.
是一种节能、环保型的塑料管材。
It is known that powder materials have important effects on the application of plastics.
粉体材料在塑料中应用的重要作用无庸置疑。
It is known that powder materials have important effects on the application of plastics.
粉体材料在塑料中应用的重要作用无庸置疑。
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