单词	(上--下)界限
释义	(上，下)界限bound
随便看	precise ranging precises precise scalar product precise separating precisest precise traversing precise vor precisian precisianism precisianisms precisianist precisians precising precision precision accuracy precision adjustment precision aimed precision analog precision analog components precision analog computing equipment precision analog computing equipment--pace precision analog computing equipment，pace precision aneroid barometer precision approach precision approach path indicator