The silica powder toughened is an electrician filler of toughness epoxy for epikote developing.增韧硅微粉是为增韧环氧树脂而研制开发的一种电工级专用填料.Only by taking part in practice can the young people be toughened and hardened into steel.年轻人只有通...

British regulations are also being toughened.英国的规章也正在变得更加严格。You can crack this toughened glass, but you can't break it.这种韧化玻璃只裂不碎.Only by taking part in practice can the young people be toughened and hardened into s...

v.（使某物[人]）坚韧，坚强，强硬( toughen的过去式和过去分词 )...

toughened的音标：...