Lead in soldering materials in mercury free flat fluorescent lamps which e. g. are used for liquid crystal displays, design or industrial lighting.

于无汞平面萤光灯(使用于液晶显示器、设计或工业照明设备)中焊锡内含的铅。

youdao

H bonds on facing folded chain crystal surfaces lead to a decrease of surface free energy and this fact is a main reason for the formation of double lamellae.

在双层片晶界面上的H键降低了表面自由能，这是形成双层片晶的主要原因。

youdao

H bonds on facing folded chain crystal surfaces lead to a decrease of surface free energy and this fact is a main reason for the formation of double lamellae.

在双层片晶界面上的H键降低了表面自由能，这是形成双层片晶的主要原因。

youdao