如果没有结晶形成，可以用玻璃棒刮一下烧瓶的瓶壁以诱导结晶形成。
If no crystals form, scratch the sides of the flask with a glass rod in order to induce crystallization.
现行的用于蒸馏和化学反应的烧瓶类玻璃仪器，有园底烧瓶、两颈瓶、三颈瓶等。
Currently, the apparatus used in distillation and other chemical reactions include round bottom flask, two necked bottle, three necked bottle, and etc.
现行的用于蒸馏和化学反应的烧瓶类玻璃仪器，有园底烧瓶、两颈瓶、三颈瓶等。
Currently, the apparatus used in distillation and other chemical reactions include round bottom flask, two necked bottle, three necked bottle, and etc.
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