Ra值越小,表面质量要求越低,其表面耐腐蚀、耐磨性和抗疲劳等能力越弱,加工成本越低
查看答案
以下说法错误的是_ __。
A. 基本视图中不包括向视图
B. 向视图是可自由配置的视图
C. 向视图应用箭头指明投射方向
D. 局部视图必须按向视图的配置形式配置并标注
Romanesque cathedrals need colonnettes to support the vault.
French Gothic churches have undergone a transformation from extreme clarity and order to an elaboration of surface.
Salisbury Cathedral demonstrates the extreme thinness and verticality.