practical training demonstration
实训示范
以上为机器翻译结果，长、整句建议使用 人工翻译 。
During selling: For the customers, we will offer the professional skills training, expertise, and increasing the practical operation and demonstration of common sense and maintenance training.
售中：为客户提供规范的专业技术培训，增加专业知识并进行实际操作演示和维护常识的培训。
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