单词	聚集时间
释义	聚集时间time， collection双向☞收集时间--聚集时间
随便看	directional gyro （dir.gyrocompass, dir.gyroscope) directional homing directional hydraulic conductivity directional hydrophone directional index directional instability directional island directionalities directionality directionality of variable directionality problem directional launch directional light directional lighting directional line directional loudspeaker directionally solidified eutectic reinforced metal matrix composite directionally solidified superalloy directional marker directional microphone directional movement directional movement unilateral movement directional nozzle directional operation directional ordering