high strength cold-formed thin-wall steel wall stu

inner wall (in-wall)

precast outside wall and cast-in-place inside wall

shear wall structure supported on frame-shear wall

shear wall supported on frame-shear wall structure

wall coil，wall grid

wall-to-wall

wall-to-wall carpet

+-18-crown-6-2

12-crown-4

13-hexaaza-14-crown-4

15-Crown-5

18 crown 6

18-Crown-6

18-crown-6 ether

18-crown-6-ether

18-Crown-6-tetracarboxylic

18-Crown-6-tetracarboxylic acid

24-Crown-8