• 1. approved material: 经批准的物料 | 许用材料 | 经核准的物料

• 1.New brush holders are to be from Dixie approved material and suppliers only.
  刷 架的材料和生产厂家必须是迪克斯指定的。
  dict.yoduao.com
• 2.The mattress and cushioning material used should be made of approved material.
  床垫和缓冲材料应采用经认可的材料。
  dict.yoduao.com
• 3.The floors of the bins shall be of concrete or other approved material having sufficient slope to ensure adequate drainage of aggregates before being used for concreting.
  料仓的底面应该是混凝土或者其它批准的材料，具有足够的斜度，以保证骨料在用于浇筑之前能足够地排水。
  dict.yoduao.com

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