Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.
尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。
Its low density has led scientists to speculate that it may consist of porous, icy material.
土卫十六密度较低，科学家因此推断它可能由多孔冰物质构成。
The use of pulsed high energy density plasma is a new low temperature plasma technology for material surface treatment and thin film deposition.
脉冲高能量密度等离子体是一项全新的等离子体材料表面处理和薄膜制备技术。
应用推荐