Lowack洛瓦克lowadj.低的；少的；低落的；低声的；卑劣的；低等的adv.低地；低声地；低下地；廉价地n.低水平；低价；低谷v.哞哞叫low-purity oxygen plant富氧设备low-frequency vibration低频振动Low-Energy Laser System低能激光系统low-water-loss cement低析水性水泥low temperaturc sintering低温烧结low pressure turbine pump低压汽轮泵low formaldehyde releases低甲醛释放量low-level logic circuit低电平逻辑电路low temperature technique低温技术low reversed cyclic loads低周反复水平荷载