Older tiles on Discovery look streaked from the plasma environment of re-entry. They stand out in photos because new tiles still appear a pristine dark black.
“发现号”上较老的板片的条纹是其在返回途中地球大气层等离子体环境造成的，在照片中它们更扎眼的原因是新的板片还保持着原来的深黑色。
For dark scenes, energy usage may not vary much between comparably sized plasma and LCD screens.
黑屏的时候等离子和液晶显示屏耗能没有太大区别，但是对于很多电视节目来说，液晶显示屏会明显省电很多。
Objective:Investigate the effects of nutritional intervention on dark adaptation function and plasma protein level, serum essential amnio acid contents in operator working in low illumination.
目的：研究低照度作业人员营养干预对血浆蛋白、血浆游离氨基酸含量及夜视功能影响。
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