脆性转变温度: ductile-brittle transition temperaturenil-ductility transition temperature
冲击: 1.(水流等撞击) lash; pound 短语和例子激流对海岸的冲击 the impact of the swift current against the shore; 海浪冲击着礁石, 飞起像珠子般的水花。 the wave lashed against the rocks, sending up pearly spray.2.(迅猛攻击) charge; assau
