是这样的，本单位购入一台氮吹仪，配合5或10mL的离心管使用，但使用过程中发现观察不到液面情况，这就很着急，请问各位大神有透明的氮吹仪不 不胜感激 谢谢[img=,690,516]https://ng1.17img.cn/bbsfiles/images/2020/09/202009071731532529_9397_3490514_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2020/09/202009071731534443_8618_3490514_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2020/09/202009071731538525_4020_3490514_3.png[/img][img=,690,516]https://ng1.17img.cn/bbsfiles/images/2020/09/202009071731540497_3715_3490514_3.png[/img][img=,690,920]https://ng1.17img.cn/bbsfiles/images/2020/09/202009071731543008_1815_3490514_3.png[/img]