【摘要】 对有毒、有害、易燃、易爆一类的化学实验,笔者已设计出一套全封闭式实验装置,本文针对其中有的装置比较复杂,初用者难于掌握的缺点,又对它做了改进,使之更为简单和操作更为方便.同时,还增设了自动防止液体倒流装置,使化学实验中长期以来存在的液体倒流问题得到解决.更多还原

【Abstract】 A totally-enclosed experimental facility for experiments involving toxic, noxious, inflamable or explosive materials has been designed. In this thesis, to counter the shortcoming that the facility is complicated and is difficult to be mastered, the authors have improved the facility and made it simple and convenient. A facility auto-preventing the liquid from flowing backward has also been designed . The longstanding problem of liquid backward flow in the experiment has got resolved.更多还原