等进到一个昏暗的凹室，他脱下外套，显出了穿在里面的蓝色上衣。
Stepping into a darkened alcove, he shed his coat, revealing the blue blazer he wore underneath.
凹模型孔设计有一定圆角，凸模带有侧刃，并采用了可靠的定位等措施有效地控制了六角工件的对角线尺寸。
The diagonal dimension of the hexagon parts is controlled by reliable position setting units, small round corner for female module designing and the male module with lateral sharp edge.
介绍了D 28型凹底平车的研制过程、主要用途、技术参数、主要结构及试验情况等。
Described are the development process, main usage, technical parameters, main structure and testing of the D28 depressed center flat car.
应用推荐