Oh, here we go. You drawing your own lines now, are you? Come on don't be a sore loser. Perpendicular lines cross at right angles. That's why they're not used in running races. And I think someone ...
Oh, here we go. You drawing your own lines now, are you? Come on don't be a sore loser. Perpendicular lines cross at right angles. That's why they're not used in running races. And I think someone ...
thick. Recent work has shown that macroscopic vermiculite crystals complexed with butylammonium ions absorb large quantities of water and swell in the direction perpendicular to the plane of the ...