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7 量热器 [材料]容量为1250ml的“雪碧”或“故泉”等饮料塑料瓶1个;Ψ40～50mm的丁烷铝罐或摩丝铝罐1个;14号废辐条1根;青霉素或链素素药瓶胶塞1个;200mm×100mm三合板下脚料1块;油漆少许。 [制法]用钢笔在塑料瓶壁标出距离瓶底120mm的若干个点并连接成圆,以作标记;用铅笔刀尖沿标记将瓶截开,把瓶的下半截截口在铺平的
7 Heater [Materials] A 1250ml bottle of “Sprite” or “Quiet” and other beverage plastic bottles; Ψ40 to 50mm of butane aluminum or mousse aluminum cans; No. 14 waste spokes 1 root; penicillin or streptin drug bottle plastic stopper 1; 200mm × 100mm plywood scrap 1; paint a little. [Manufacturing method] Use a pen to mark several points 120mm from the bottom of the bottle on the plastic bottle and connect them into a circle to mark; use a pencil tip to cut the bottle along the mark, and cut the bottom half of the bottle. of