1592953526000 1312632483000 term-55951 1616541253384 1312632550000 1616290060883 adlib fitz-online adlib-term-55951 6f17a8e7-1561-36f3-9720-aa10ba757f57 2 1 flat plate systems, one-way flat plate systems, one-way term reference term-55986 adlib-term-55986 4aaf975a-08b2-3d5a-b036-9f578e231a34 one-way solid slab systems