以下是源代码中文案中的拼写错误、单复数误用及标点错误： 1. **"which has own granite mines,"** - 应为 **"which has its own granite mines,"**（缺少"its"）。 2. **"by virtue of prominent project schemes,"** - 结尾不需要逗号（此句不需逗号终止）。 3. **"the operational costs on the other hand."** - 应该为 **"the operational costs on the other hand,"**（缺少逗号）。 4. **"A standard workshop for dust removal is built."** - 可能需要更清晰的表达，例如 **"A standard dust removal workshop has been built."**（语法更流畅）。 5. **"totally meeting national standard on environment protection."** - 应为 **"totally meeting the national standard on environmental protection."**（缺少"the"和"environmental"为形容词）。 6. **"in today's market, this production line"** - 首字母应大写，应该为 **"In today's market, this production line"**（句子的首字母需要大写）。 7. **"as low production efficiency, difficult installation and inconvenient maintenance."** - 应为 **"such as low production efficiency, difficult installation, and inconvenient maintenance."**（加上"such as"和在"and"前加逗号）。 8. **"technologies. Currently,"** - 可以考虑用连词 **"technologies; currently,"**（建议使用分号连接两个独立的句子）。 9. **"Based on some design principles of traditional multi-cylinder hydraulic cone crusher"** - 应为 **"Based on some design principles of traditional multi-cylinder hydraulic cone crushers"**（需改为复数）。 这些是文案中的主要错误和不适当的表述。