封面页、存根和凭证将根据所采用的纸张重量以资区别。
The cover pages, counterfoils and the vouchers will be differentiated in term of the weight of the paper used.
旧纸张重量的约90%来自纤维素，这是构成植物细胞壁的坚固材料。
About 90 percent of the weight of old paper is cellulose, the sturdy material that makes up plant cell walls.
旧纸张重量的约90%来自纤维素，这是构成植物细胞壁的坚固材料。
About 90 percent of the weight of old paper is cellulose, the sturdy material that makes up plant cell walls.
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