There were some false starts along the way. Mr. Kurtin considered using liquid -crystal electronics to adjust the focus, but the batteries proved problematic.
在研究的一开始曾出现一些失误，库尔廷考虑使用液晶电子元件来调整焦距，但电池成为问题。
There were some false starts along the way. Mr. Kurtin considered using liquid -crystal electronics to adjust the focus, but the batteries proved problematic.
在研究的一开始曾出现一些失误，库尔廷考虑使用液晶电子元件来调整焦距，但电池成为问题。
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