2022年3月25日
cardboard
摘要： Cardboard is a generic term for heavy-duty paper-based products having greater thickness and superior durability or other specific mechanical attribut 阅读全文
posted @ 2022-03-25 20:55 华容道专家 阅读(525) 评论(0) 推荐(0)
Parts Per Million (ppm) Converter for Gases
摘要： Parts Per Million (ppm) Converter (lenntech.com) The unit ppm is used in several branches in different ways. In air pollution literature ppm applied t 阅读全文
posted @ 2022-03-25 08:52 华容道专家 阅读(39) 评论(0) 推荐(0)
card
摘要： A playing card is a piece of specially prepared card stock, heavy paper, thin cardboard, plastic-coated paper, cotton-paper blend, or thin plastic tha 阅读全文
posted @ 2022-03-25 08:45 华容道专家 阅读(190) 评论(0) 推荐(0)