尘埃计数器 Particle Counters ; dust counter ; SDC
灯具尘埃减能系数 luminaire dirt depreciation factor ; luminaire dirt depreciation factor,
尘埃粒子计数器 Dust particle counter ; airborne particle counter ; MET ONE ; Biotest
激光尘埃计数器 laser dust counter
尘埃计数器计尘器 dust counter
尘埃颗粒计数器 Met One Airborne Particle Counter
便携式尘埃粒子计数器 Portable Dust Particles Counter
激光尘埃粒子计数器 laser airborne particle counter
尘埃粒子计数器- LCD
低温气体和尘埃长长的卷须从渐行渐远的电离前沿一直延伸到数光年远的太空。
A long tendril of colder gas and dust extends many light years into the void from the receding ionization front.
这个新模型追踪了海王星轨道外数无数个微小物体的运行轨迹，它可以帮助天文学家计算出其他星系尘埃盘中行星的特性。
The new model, which tracks thousands of tiny particles beyond the orbit of Neptune, could help astronomers work out the properties of planets in other stars' dust disks.
尘埃粒子所带电荷数越大，磁场对它的影响越明显。
The more charge number the dust grain carries the more obvious the magnetic field effects on it.
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