【第 1 段建议】: 1. "lmpact"应为"Impact" - 'l'与'I'的混淆。 2. "中文"、"Русский"、"Español"、"العربية"、"Français"、"Português"等语言名称应在列表中与“More Languages”之间保持相同的格式。比如加上“：”，以保持一致性。 3. "case"在"Cases"后不应有小写字母 - 应为"Cases"。 4. "s"在"business"后应为大写 - 应为"Business"。 5. "PRODUCT"后需加句号（.）以确保格式一致。 6. 在"Sand production technology and product"中的"and product" 末尾应为"production" 以保持语义完整。 以上为发现的问题。 --- 【第 2 段建议】: 1. "unquestio" 应为 "unquestionable" 2. "analysis" 需要大写开头，应为 "Analysis" 3. "the German sand making equipment directly determines the key factors of the production of the whole process of the mechanical sand." 句子有些赘余，建议简化。 4. "the more it affects the normal operation of the German sand making machine, because in the working process of the German sand making machine, these fine The club sticks to the equipment supplier" 中的 "The club" 似乎是不当的用词，可能应为 "particles" 或 "powder"。 5. "should be passed once in advance" 建议改为 "should be passed through once in advance"。 6. "the more difficult it is to sand, and the more severe the wear on the German sand making machine." 可以考虑调整为 "the more difficult it is to produce sand, and the greater the wear on the German sand making machine." 7. "when selecting materials, it must be noted that the viscosity of the material should not be too large." 句子可稍作修改以增强流畅性，例如 "when selecting materials, it is important to ensure that the viscosity of the material is not too high." 8. "and it is easy to form a discharge port during the feeding process." 最后“一句”不完整，建议补全或改写以确保流畅。 请注意以上几点，并适当修改。 --- 【第 3 段建议】: 1. "ity" 应该是 "Quality" 2. "German sand making machine" 应为 "German sand-making machines"（保持一致性，使用复数） 3. "material" 一词在某些上下文中需要改为复数形式 "materials" 4. "percentage of moisture" 中的 "moisture" 应省略 "the"（语法问题） 5. "German machine sand production technology" 应为 "German sand production technology"（冗余） 标点问题: - "equipment selection, scheme design, technical support," 中的 “” 多了一个空格。 其他所有部分无错误。