They make great teaching tools.
这是一个非常优秀的教学工具。
Piggy banks are great as both teaching tools and fun toys.
罐 就非常好的集教学工具和可爱玩具于一体。
Provide information on the use and maintenance of teaching. Provide Special maintenance tools.
提供使用及维修教学资料和专用维修工具大礼包。
Instruments are the important tools for scientific research and teaching.
仪器是科学研究和教学的重要工具。
CNC machine tools to ensure long-term safe and stable operation, better for the teaching service.
确保数控机床长期安全平稳运行，更好的为教学服务。
CNC machine tools to ensure long-term safe and stable operation, better for the teaching service.
确保数控机床长期安全平稳运行，更好的为教学服务。
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