red education science thumbtack office temperature effect energy work physics heat solar hash greenhouse infra-red infrared infra Greenhouse Effect clip art 温室 影响 学校 红色教育科学图钉办公室温度影响能源工作物理热太阳能哈希温室红外线红红外红外线
None 雕刻 Marie Curie - Physicist 关系图 Illustration of apparatus to deflect beta rays from radium in a magnetic field
Famous Mass Energy Equivalence Formula with Explanation for each symbol. Drawn with Inkscape using layers. 大众 大众 的 大众-能源等价公式 2