The fracture toughness of the bimetallic interfaces is lower than those of respective counterpart metals.在扩展路径上,界面和金属交替出现,且界面的断裂韧性不如相应单一材料的断裂韧性.The President had talks during a brief stopover in Lisbon with his Portugues...
The palm of one's hand is slightly concave.人的手掌是微凹的.The cloven hooves are sharp edged , elastic and concave.蹄锋利,呈凹形, 富有弹性.In adults its contour may be straight, slightly concave or slightly convex.成人肺其形状可以是直的, 轻微凹下或...