extrados

n.

拱背（拱的外缘线）；

Promising Benefits of an Active-Extrados Morphing Laminar Wing
Extrados strengthening of brick masonry arches with PBO–FRCM composites: Experimental and analytical investigations
Optimized design of an active extrados structure for an experimental morphing laminar wing
Morphing laminar wing with flexible extrados powered by shape memory alloy actuators
Blade with non-axisymmetric platform: recess and boss on the extrados
New prefabricated elements of lightened plaster used for partitions and extrados
Design of Shape Memory Alloy Actuators for Morphing Laminar Wing With Flexible Extrados
Experimental validation of the 3D numerical model for an adaptive laminar wing with flexible extrados
Automatic device for lap-joint engagement of two bridge elements on intrados or extrados and bridge element comprising it
Finite element analysis of plastic limit pressure of elbows with local thinned area on inner wall of extrados