现场用的是节能灯，大多数舞台装饰用的都是再生木材，演唱会上的横幅也会得到回收利用，做成文件夹。
The venue used energy-saving lighting and most of the decorations were made of reclaimed wood; the banners will be recycled into folders.
一般都备有铰链着的玻璃盖面，以把稿件夹平。有些更可以换上透明片架，在后面打灯照明。
Frequently it has a hinged glass cover to hold copy flat, and may have a removable section in which a transparency holder can be positioned for back-lighting illumination.
电致发光灯本质上是一种电容器结构，在两个电极之间夹一层无机磷（锌硫混合物）。
The EL lamp is essentially a capacitor structure with an inorganic phosphor ( zinc sulphur compound ) sandwiched between electrodes.
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