optimum way优选途径optimumadj.最佳的；最适宜的n.最适宜optimum family size最适家系大小optimum performance最佳性能,最佳操作特性optimum temperuture最适温度Optimum radio range最优通信范围optimum ball charge最佳装球量optimum ventilation优化通风optimum alternative最优替代方案optimum formulation优化配方optimum replication优化复制optimum growth rate最适(鉴定)头数