Informal science, technology, engineering, and mathematics (STEM) learning opportunities offer great potential to position learners as insiders to STEM and to foster their positive STEM identity development. Despite their goal to create equal insights and access to STEM learning for all, however, these...
发明人: T Satoshi,高橋 聡 摘要: PROBLEM TO BE SOLVED: To provide an momentary power interruption/momentary voltage drop countermeasure device, capable of reducing unnecessary backup operations and suppressing consumption or a failure of an electricity-storing means.收藏...