在某一比例时，可得到完全无定形的共聚酯的翻译：At the time of a certain percentage, can be completely amorphous polyester 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

In a certain proportion, you get completely amorphous copolyester

At the time of a certain percentage, can be completely amorphous polyester

When some proportion, may obtain the completely amorphous altogether polyester

In a certain ratio, the total may be completely amorphous polyester.

At the time of a certain percentage, can be completely amorphous polyester