平均: average; mean存取: access速度: velocity; speed; blast; bat存取速度: acce eed; access speed平均存取时间: average acce time; average access time; mean acce time; mean access time平均存取时问: average access time存储器存取速度: memory access rate存取速率: access rate读取速度: read rate接取速度: access speed卷取速度: coiling speed拾取速度: pick-up velocity提取速度: extraction rate选取速度: access speed抓取速度: grasp speed平均存储器: average memory; averaging memory平均存活时: mean survival time平均存货: average inventory; average stock平均存货期: days of average inventory数据存取速率: data access rate数据读取速度: data reading speed数据选取速度: access speed计算平均存货: averaging stock平均存活时间: mean survival time; median survival time平均存货水平: average inventory level