The amount of mineral oil contained in any article of food does not exceed 0 . 2 parts by weight of mineral oil per 100 parts by weight of the article of food ; and 食品所含矿物油分量，以重量计不超过食品重量每100份的0 . 2份及
2.
The amount of mineral oil contained in any article of food does not exceed 0 . 2 parts by weight of mineral oil per 100 parts by weight of the article of food ; and 食品所含矿物油分量，以重量计不超过食品重量每100份的0 . 2份；及
3.
The best content of nanometer caco3 is 10 part by weight ( pbw ) ; light caco3 have no ditinct toughening and reinforcing effect in nanocrystal pvc / pvc / light caco3 composite . nanocrystal pvc promotes the form of claster crystal that induce t he improvement of property of pvc by sem test 轻质caco _ 3没有明显的增韧增强作用，仅起到降低成本的作用； sem照片显示纳米晶pvc促进了基体中细小串珠状晶区的形成，表明纳米晶pvc具有成核作用，可以提高体系的力学性能。
