hourn.小时;钟点
hour rack(钟)时齿条
hour heart时桃轮
hour snail时蜗形凸轮
hourcirclen.时圈
hour wheel时轮
hour entry记时信息
hour range时较差
hour plate时钟字盘
hour glassn.砂漏
Hourtoulle乌尔图勒