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- E1级E1 grade
- E1级中密度纤维板E1 grade MDF
- 采用13C-核磁共振定量分析了由选定碱-酸-碱工艺所合成的E1级MDF用三聚氰胺改性脲醛树脂。The melamine-modified urea-formaldehyde resin (MUF) for E1 type MDF was quantitatively examined using the 13C-NMR spectroscopy.
- ET03助剂降低E1级中纤板生产成本的试验Using ET03 Auxiliary to Reduce Production Cost for E1-level MDF
- 对低毒脲醛树脂制造挤压刨花板(空)研究结果表明:采用低毒脲醛树脂,不仅挤压刨花板甲醛释放量可以满足E2级标准,而且甲醛释放量可以满足E1级标准。The vesults of our vesearch on low toxicity UF resin for grade of extruded particleboard( perforated) showed: The formaldehyde emission of extruded particleboard made from low toxicity UF resins could meet E2 standard, and E1 standard.
- 级联connection
- 校级field rank
- 英语四级English Band 4
- 大学英语四级College English Band 4
- 一级的firstlevel
- 船级ship' classification
- 三级片third-grade film
- 无级stepless
- 级配graduation
- 两级two-stage
- 第二级secondary
- 大学英语六级考试CET-6 [College English Test, Band Six]
- 第一级first step
- 工业级technical grade
- 大学英语六级College English Test