该发电机是一种清洁、静音功率发电机，能在紧急条件下，供专业人员使用。
The product will be a clean and quiet power generator for use by professionals for emergency purposes.
因此，这些工具只能供技术专业人员使用，而业务分析人员对使用这些工具存在疑虑。
Thus, these tools are only usable by technical experts, and business analysts are skeptical about using them.
本书供施工机械操作、维修和管理人员查阅，还可作为专业培训教材使用。
Book for construction machinery operation, maintenance and management of inspection, can also be used as a professional training materials.
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