Volatile oil apparatus (Clevenger)for oils heaviers than water. The neck of the distillation head should be insulated with asbestos thread. 这是一个什么样的装置呢,请教
原文由 hopestarzyf(hopestarzyf) 发表: Volatile oil apparatus (Clevenger)for oils heaviers than water. The neck of the distillation head should be insulated with asbestos thread. 这是一个什么样的装置呢,请教