基本解释[化学]一级标准物质英汉例句双语例句Each delivery or batch of printed or primary packaging material should be given a specific reference number or identification mark.42款：每批或每次发放的印刷好包装材料或内包装材料，均应设置特定的批号/编号或识别标志。primary reference material更多例句专业释义化学一级标准物质