1·The materials chiefly used in modern papermaking are cotton or linen rags and wood pulp.
现代造纸中主要使用的材料是棉布或亚麻布和木浆。
2·The materials chiefly used in modern papermaking are cotton or linen rags and wood pulp.
现代造纸中主要使用的材料是棉布或亚麻布和木浆。
3·They invented the paper machine so they could mass-produce paper — it didn't have to be handmade anymore — and they invented wood pulp paper so it didn't have to be made out of cloth anymore.
于是人们发明了造纸机从而可以大量生产纸-，而不再需要手工制作-，后来人们还发明了木浆纸，所以后来不再用布料来制纸。
4·Common mixtures include sodium citrates, sodium borohydride (also used to bleach wood pulp) and ammonium compounds, all of which can be toxic to humans and the environment.
一般的混合物包括柠檬酸钠，硼氢化钠(其也用于漂白木浆)和铵类化合物，所有的这些物质都对人体和环境有着危害。
5·Chemical wood pulp, sulphite, other than dissolving grades.
亚硫酸盐木浆，但溶解级的除外。