The pots pictured here still have traces of hardened styrene resin faintly visible on their outer surfaces.
图为还有苯乙烯树脂硬化淡淡的外表面明显痕迹的盆。
2
In the cement composite, a hardened cement product is coated with a substance block agent composed chiefly of an aqueous dispersion of synthetic resin, a swelling clay mineral and a pigment.
An unsaturated polyester resin was synthesized from dicyclopentadiene maleic acid and ethylene glycol. this resin can be moulded by casting and also can be hardened in air.