toughened 

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adj. ���͵�
v. ����ͣ�����ǿ�������ѣ�toughen�Ĺ�ȥ�ִʣ�

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a. hardened��tempered��tough��treated

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a.   tender��unhardened��untempered��untoughened

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1. The government has toughened the fight against corruption.
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2. Toughened glass, high temperature resistant silicon rubber sealing belt.
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3. The newly research achievement of the author in the field of inorganic rigid particles strengthened and toughened polymer(Nylon, PP, PE) was introduced in this paper.
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adj.
  1. physically toughened
  2. made hard or flexible or resilient especially by heat treatment

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