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...
She quickly tendered her resignation.她很快递交了辞呈。This morning, looking harassed and drawn, Lewis tendered his resignation.今天早晨，刘易斯面色憔悴、疲惫不堪地递交了辞呈。He took his wallet from his inside coat pocket and tendered the permit.他从外套内兜...