减速器、制动器等起升装置。
Why is there no significant speedup using reducers in this example?为什么没有显著的加速使用还原剂在这个例子吗?
The reducers averaged age 51, were 39 percent female and smoked an average 26 cigarettes per day prior to cigarette reduction.重度吸烟者组平均年龄为51岁,39%为女性,减少吸烟量以前每天平均吸26支卷烟。