课侦探 芝麻学社《少年第一堂化学课》化学元素知识 [视频]百度网盘
课程目录：
01先导.mp4 110.50M
02.氧.mp4 99.03M
03氢.mp4 124.54M
04.铁.mp4 106.76M
05.碳.mp4 119.94M
06.钠.mp4 117.17M
07.氮.mp4 123.03M
08.钙.mp4 101.81M
09.磷.mp4 114.16M
10.硫.mp4 107.75M
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课程目录：
01先导.mp4 110.50M
02.氧.mp4 99.03M
03氢.mp4 124.54M
04.铁.mp4 106.76M
05.碳.mp4 119.94M
06.钠.mp4 117.17M
07.氮.mp4 123.03M
08.钙.mp4 101.81M
09.磷.mp4 114.16M
10.硫.mp4 107.75M