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...
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, 轻微凹下或轻度突出.concave lens凹透镜The palm of one's hand is slight...
The laser - cladding techique for welding of and large workpieces is reported.本文报导了激光熔敷法焊接异型件的新技术.Cooling affects the machining precision of workpieces and the tool - life greatly.冷却问题的研究是非常重要的,它对工件的加工质量和刀具寿命有很大影响.Adopti...